EA for BPS: an RCT and Study for Central Mechanism

NCT ID: NCT05279963

Last Updated: 2024-12-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

84 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-03-16

Study Completion Date

2025-01-23

Brief Summary

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This is a randomized controlled and assessor-blinded design trial to evaluate the efficacy and safety of acupuncture for bladder pain syndrome(BPS). All eligible participants will be randomly assigned to the medication group(n=21), EA group(n=42) and SA group(n=21) in a 1:2:1 allocation ratio. Participants will receive 4-week treatments phase followed by a 4-week follow-up phase. Outcomes will be assessed at baseline, during the treatment and at the end of the follow-up. Outcome assessors, data managers and statisticians will be blinded to the group allocation, while acupuncturists and participants will not be blinded for obvious reasons. Besides, fMRI will be used to collect spontaneous electrical activity of the brain of patients. In this trial, the investigators assume that electroacupuncture for BPS, compared to amitriptyline, is instrumental in improving symptoms such as pain, frequent micturition and emotional disorder.

Detailed Description

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Participants will be primarily recruited from gynecology, urology and acupuncture departments during outpatient service. All patients will be randomly assigned to either the medication group, EA group or SA group via random number table. SAS 9.3 software will be adopted to generate random numbers. The independent clinical research assistant will be responsible for generating random numbers and making random allocation cards, each with its group allocation information and sealed into an opaque envelope, which will not be open until the first treatment. According to the order of enrollment, eligible participants will be randomly assigned into the medication, EA or SA group at 1:2:1 ratio under the allocation in the envelope.

Due to the characteristics of acupuncture, acupuncture manipulators cannot be blinded. Nevertheless, to avoid the subjective bias of researchers and subjects, outcome assessment and statistical analysis will be performed by different researchers blinded to the allocation information. Patients are informed that they will receive one of two effective acupuncture interventions after enrollment, and during the treatment, patients in EA or SA groups will be in separate rooms to avoid communication. Outcome assessors and statisticians will be blind to the group allocations. The participant's allocated intervention will not be revealed until the statistical analysis reports are completed.

Participants in the medication group will be merely treated with oral administration of amitriptyline capsule. The dosage of amitriptyline is 25 mg bid, for 4 weeks. Any changes in the medications of individual participants will be recorded on diary cards.

In EA group, acupuncture treatment is carried out by acupuncturists who have been well trained. Acupuncture will be performed with disposable and sterile needles in the specification of 0.25 ×40 mm(diameter: 0.25 mm; Suzhou Medical Products Factory Co., Ltd, China). Patients are asked to lie in a prone position with whole body relaxed. Both the skin around the selected acupoints and the hand of acupuncturists are routinely disinfected, after insertion, manipulations of twirling, lifting and uniform reinforcing reducing manipulation will be performed on all needles to elicit 'deqi'. The compositional sensation of 'deqi' involves with numbness, soreness, distention, aching and heaviness, which are believed to be an essential component for acupuncture efficacy. Electroacupuncture procedures will be performed with electronic instruments (Hans-100A, Nanjing Jisheng Medical TechnologyCo., Ltd, China). Two paired of acupoints (i.e., two Shenshu(BL23) and two Ciliao(BL32), respectively) are connected to the EA apparatus. Alternating-frequency mode is selected and frequency is 2/100 Hz. EA intensity is determined in accordance with patients' endurance. EA will last for 30 min for each treatment. Patients will receive a total number of 12 EA sessions, with the frequency of 3 sessions per week for 4 weeks.

In SA group, Acupuncture will be conducted by well-trained acupuncturists and performed with disposable and sterile needles in the specification of 0.25×40 mm (diameter: 0.25 mm; Suzhou Medical Products Factory Co., Ltd, China). Patients are asked to lie in a prone position with whole body relaxed. Both the skin around the selected acupoint and the hand of acupuncturists are routinely disinfected. The needles are subcutaneously inserted to non-meridian and non-acupoints regions. SA procedures will be performed with electronic instruments (Hans-100A, Nanjing Jisheng Medical Technology Co., Ltd, China). Two paired of points are connected to the electronic instruments. Alternating-frequency mode is selected and the frequency is 2/100 Hz. Different from the EA group, the apparatus will run without electricity in the SA group. The procedure will last for 30 min. Patients will receive a total number of 12 SA sessions, with the frequency of 3 sessions per week for 4 weeks.

Outcomes, such as Visual analog scale, O'Leary-Sant questionnaire, 24-hour voiding diary, Hamilton Anxiety Scale and Hamilton Depression Scale, will be assessed at baseline, during the treatment and at the end of the follow-up. Outcome assessors, data managers and statisticians will be blinded to the group allocation, while acupuncturists and participants will not be blinded for obvious reasons.

Besides, fMRI will be used to collect spontaneous electrical activity of the brain of patients, and the changes of spontaneous electrical activity of specific brain regions, resting brain functional connectivity and information interaction of multifunctional areas will be analyzed.

Conditions

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Bladder Pain Syndrome

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors
Due to the characteristics of acupuncture, acupuncture manipulators cannot be blinded. Nevertheless, to avoid the subjective bias of researchers and subjects, outcome assessment and statistical analysis will be performed by different researchers blinded to the allocation information. Patients are informed that they will receive one of two effective acupuncture interventions after enrollment, and during the treatment, patients in EA or SA groups will be in separate rooms to avoid communication. The participant' s allocated intervention will not be revealed until the statistical analysis reports are completed.

Study Groups

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medication group

Participants in the medication group will be merely treated with oral administration of amitriptyline capsule. The dosage of amitriptyline is 25mg bid, for 4 weeks. Any changes in the medications of participants will be recorded on diary cards.

Group Type ACTIVE_COMPARATOR

Amitriptyline

Intervention Type DRUG

Participants in the medication group will be merely treated with oral administration of amitriptyline capsule. The dosage of amitriptyline is 25mg bid, for 4 weeks. Any changes in the medications of individual participants will be recorded on diary cards.

EA group

Patients allocated to this group will receive treatment with electroacupuncture. The location of acupoints will be determined based on the National Standard Nomenclature and Location of Acupoints. Patients will receive a total number of 12 EA sessions, with the frequency of 3 sessions per week for 4 weeks.

Group Type EXPERIMENTAL

electroacupuncture

Intervention Type PROCEDURE

The prespecified acupoints applied here will include bilateral Sanyinjiao(SP6), Shenshu(BL23), Ciliao(BL32), Zhongliao(BL33), Zhibian(BL54) .

Acupuncture treatment is carried out by acupuncturists who have been well trained. Acupuncture will be performed with disposable and sterile needles in the specification of 0.25 ×40 mm(diameter: 0.25mm; Suzhou Medical Products Factory Co., Ltd, China). Electroacupuncture procedures will be performed with electronic instruments (Hans-100A, Nanjing Jisheng Medical TechnologyCo., Ltd, China). Two paired of acupoints (i.e., two Shenshu(BL23) and two Ciliao(BL32), respectively) are connected to the EA apparatus. Alternating-frequency mode is selected and frequency is 2/100 Hz. EA intensity is determined in accordance with patients' endurance. EA will last for 30 min for each treatment. Patients will receive a total number of 12 EA sessions, with the frequency of 3 sessions per week for 4 weeks.

SA group

Patients allocated to this group will receive acupuncture in non-meridian and non-acupoints regions. The needles are shallowly inserted to the subcutaneous area, and acupoints are connected to the EA apparatus without electricity. The frequency, intensity and duration of treatment will be the same as the EA group.

Group Type SHAM_COMPARATOR

sham electroacupuncture

Intervention Type PROCEDURE

In the trunk region, the points are 5 cm away from respective acupoints. In the lower limb region, the point is 3 cm away from Sanyinjiao(SP6). All points will only receive shallow insertion.

Acupuncture will be performed with disposable and sterile needles in the specification of 0.25 ×40 mm(diameter: 0.25mm; Suzhou Medical Products Factory Co., Ltd, China).The needles are shallowly inserted to the subcutaneous area, and acupoints are connected to the EA apparatus without electricity. The frequency, intensity and duration of treatment will be the same as the electric needle group.

Interventions

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electroacupuncture

The prespecified acupoints applied here will include bilateral Sanyinjiao(SP6), Shenshu(BL23), Ciliao(BL32), Zhongliao(BL33), Zhibian(BL54) .

Acupuncture treatment is carried out by acupuncturists who have been well trained. Acupuncture will be performed with disposable and sterile needles in the specification of 0.25 ×40 mm(diameter: 0.25mm; Suzhou Medical Products Factory Co., Ltd, China). Electroacupuncture procedures will be performed with electronic instruments (Hans-100A, Nanjing Jisheng Medical TechnologyCo., Ltd, China). Two paired of acupoints (i.e., two Shenshu(BL23) and two Ciliao(BL32), respectively) are connected to the EA apparatus. Alternating-frequency mode is selected and frequency is 2/100 Hz. EA intensity is determined in accordance with patients' endurance. EA will last for 30 min for each treatment. Patients will receive a total number of 12 EA sessions, with the frequency of 3 sessions per week for 4 weeks.

Intervention Type PROCEDURE

Amitriptyline

Participants in the medication group will be merely treated with oral administration of amitriptyline capsule. The dosage of amitriptyline is 25mg bid, for 4 weeks. Any changes in the medications of individual participants will be recorded on diary cards.

Intervention Type DRUG

sham electroacupuncture

In the trunk region, the points are 5 cm away from respective acupoints. In the lower limb region, the point is 3 cm away from Sanyinjiao(SP6). All points will only receive shallow insertion.

Acupuncture will be performed with disposable and sterile needles in the specification of 0.25 ×40 mm(diameter: 0.25mm; Suzhou Medical Products Factory Co., Ltd, China).The needles are shallowly inserted to the subcutaneous area, and acupoints are connected to the EA apparatus without electricity. The frequency, intensity and duration of treatment will be the same as the electric needle group.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* 18 ≤ age ≤70 years, male or female;
* Must fulfill the first and the second diagnostic criteria;
* 30 mm≤ VAS score ≤80mm;
* Participants can fully understand the study protocol and a written informed consent is signed.

Exclusion Criteria

* Patients with previous bladder stones or other space-occupying lesions;
* Previous positive urine culture or significant abnormal urine routine;
* Significant organic lesions of genitourinary system and pelvic organs;
* Patients suffer from severe primary diseases such as cardiovascular, cerebrovascular, respiratory, liver and kidney, or patients cannot receive EA treatment due to any reasons;
* People with heart stents and other metallic substances in their bodies;
* Women who are pregnant, planning to become pregnant, breast-feeding or allergic to study drugs;
* Patients have participated in other clinical trials within the last 3 months.
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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The Third Affiliated hospital of Zhejiang Chinese Medical University

OTHER

Sponsor Role lead

Responsible Party

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Yuanyuan Wu

Attending Chinese medicine doctor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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The Third Affiliated Hospital of Zhejiang Chinese Medical University

Hangzhou, Zhejiang, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Yuanyuan Wu, PHD

Role: CONTACT

0571-88393504

Facility Contacts

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Yuanyuan Wu, Doctor

Role: primary

86-15336871318

References

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Hanno PM, Erickson D, Moldwin R, Faraday MM; American Urological Association. Diagnosis and treatment of interstitial cystitis/bladder pain syndrome: AUA guideline amendment. J Urol. 2015 May;193(5):1545-53. doi: 10.1016/j.juro.2015.01.086. Epub 2015 Jan 23.

Reference Type BACKGROUND
PMID: 25623737 (View on PubMed)

van de Merwe JP, Nordling J, Bouchelouche P, Bouchelouche K, Cervigni M, Daha LK, Elneil S, Fall M, Hohlbrugger G, Irwin P, Mortensen S, van Ophoven A, Osborne JL, Peeker R, Richter B, Riedl C, Sairanen J, Tinzl M, Wyndaele JJ. Diagnostic criteria, classification, and nomenclature for painful bladder syndrome/interstitial cystitis: an ESSIC proposal. Eur Urol. 2008 Jan;53(1):60-7. doi: 10.1016/j.eururo.2007.09.019. Epub 2007 Sep 20.

Reference Type BACKGROUND
PMID: 17900797 (View on PubMed)

Hanno PM. Re-imagining interstitial cystitis. Urol Clin North Am. 2008 Feb;35(1):91-9; vii. doi: 10.1016/j.ucl.2007.09.011.

Reference Type BACKGROUND
PMID: 18061027 (View on PubMed)

Konkle KS, Berry SH, Elliott MN, Hilton L, Suttorp MJ, Clauw DJ, Clemens JQ. Comparison of an interstitial cystitis/bladder pain syndrome clinical cohort with symptomatic community women from the RAND Interstitial Cystitis Epidemiology study. J Urol. 2012 Feb;187(2):508-12. doi: 10.1016/j.juro.2011.10.040. Epub 2011 Dec 15.

Reference Type BACKGROUND
PMID: 22177158 (View on PubMed)

Nickel JC, Payne CK, Forrest J, Parsons CL, Wan GJ, Xiao X. The relationship among symptoms, sleep disturbances and quality of life in patients with interstitial cystitis. J Urol. 2009 Jun;181(6):2555-61. doi: 10.1016/j.juro.2009.02.030. Epub 2009 Apr 16.

Reference Type BACKGROUND
PMID: 19375108 (View on PubMed)

Ouyang H, Chen JD. Review article: therapeutic roles of acupuncture in functional gastrointestinal disorders. Aliment Pharmacol Ther. 2004 Oct 15;20(8):831-41. doi: 10.1111/j.1365-2036.2004.02196.x.

Reference Type BACKGROUND
PMID: 15479354 (View on PubMed)

Qaseem A, Wilt TJ, McLean RM, Forciea MA; Clinical Guidelines Committee of the American College of Physicians; Denberg TD, Barry MJ, Boyd C, Chow RD, Fitterman N, Harris RP, Humphrey LL, Vijan S. Noninvasive Treatments for Acute, Subacute, and Chronic Low Back Pain: A Clinical Practice Guideline From the American College of Physicians. Ann Intern Med. 2017 Apr 4;166(7):514-530. doi: 10.7326/M16-2367. Epub 2017 Feb 14.

Reference Type BACKGROUND
PMID: 28192789 (View on PubMed)

Quinlan-Woodward J, Gode A, Dusek JA, Reinstein AS, Johnson JR, Sendelbach S. Assessing the Impact of Acupuncture on Pain, Nausea, Anxiety, and Coping in Women Undergoing a Mastectomy. Oncol Nurs Forum. 2016 Nov 1;43(6):725-732. doi: 10.1188/16.ONF.725-732.

Reference Type BACKGROUND
PMID: 27768139 (View on PubMed)

Tsai SL, Fox LM, Murakami M, Tsung JW. Auricular Acupuncture in Emergency Department Treatment of Acute Pain. Ann Emerg Med. 2016 Nov;68(5):583-585. doi: 10.1016/j.annemergmed.2016.05.006. Epub 2016 Jun 8.

Reference Type BACKGROUND
PMID: 27287548 (View on PubMed)

Wu YY, Jiang YL, He XF, Zhao XY, Shao XM, Du JY, Fang JQ. Effects of Electroacupuncture with Dominant Frequency at SP 6 and ST 36 Based on Meridian Theory on Pain-Depression Dyad in Rats. Evid Based Complement Alternat Med. 2015;2015:732845. doi: 10.1155/2015/732845. Epub 2015 Mar 4.

Reference Type BACKGROUND
PMID: 25821498 (View on PubMed)

Lv TT, Lv JW, Wang SY, Jiang C, Gu YJ, Liu HR. [Efficacy of electroacupuncture nerve stimulation therapy for interstitial cystitis/bladder pain syndrome]. Zhongguo Zhen Jiu. 2019 May 12;39(5):467-72. doi: 10.13703/j.0255-2930.2019.05.003. Chinese.

Reference Type BACKGROUND
PMID: 31099215 (View on PubMed)

Min zhi, Hu Xiquan, Chen Xuelian, et al. Clinical Observation of Electroacupuncture Combined with Bladder Irrigation for Bladder Pain Syndrome.Shanghai Journal of Acupuncture and Moxibustion. 2020; 39(02): 192-195.

Reference Type BACKGROUND

Chan AW, Tetzlaff JM, Altman DG, Laupacis A, Gotzsche PC, Krleza-Jeric K, Hrobjartsson A, Mann H, Dickersin K, Berlin JA, Dore CJ, Parulekar WR, Summerskill WS, Groves T, Schulz KF, Sox HC, Rockhold FW, Rennie D, Moher D. SPIRIT 2013 statement: defining standard protocol items for clinical trials. Ann Intern Med. 2013 Feb 5;158(3):200-7. doi: 10.7326/0003-4819-158-3-201302050-00583.

Reference Type BACKGROUND
PMID: 23295957 (View on PubMed)

Moher D, Hopewell S, Schulz KF, Montori V, Gotzsche PC, Devereaux PJ, Elbourne D, Egger M, Altman DG; CONSORT. CONSORT 2010 explanation and elaboration: updated guidelines for reporting parallel group randomised trials. Int J Surg. 2012;10(1):28-55. doi: 10.1016/j.ijsu.2011.10.001. Epub 2011 Oct 12.

Reference Type BACKGROUND
PMID: 22036893 (View on PubMed)

Thompson E. Hamilton Rating Scale for Anxiety (HAM-A). Occup Med (Lond). 2015 Oct;65(7):601. doi: 10.1093/occmed/kqv054. No abstract available.

Reference Type BACKGROUND
PMID: 26370845 (View on PubMed)

Carneiro AM, Fernandes F, Moreno RA. Hamilton depression rating scale and montgomery-asberg depression rating scale in depressed and bipolar I patients: psychometric properties in a Brazilian sample. Health Qual Life Outcomes. 2015 Apr 2;13:42. doi: 10.1186/s12955-015-0235-3.

Reference Type BACKGROUND
PMID: 25889742 (View on PubMed)

Melzer J, Rostock M, Brignoli R, Keck ME, Saller R. Preliminary data of a HAMD-17 validated symptom scale derived from the ICD-10 to diagnose depression in outpatients. Forsch Komplementmed. 2012;19(4):191-6. doi: 10.1159/000342018. Epub 2012 Aug 20.

Reference Type BACKGROUND
PMID: 22964985 (View on PubMed)

El-Hefnawy AS, Soliman HMM, Abd-Elbary SOM, Shereif WI. Long-standing nonulcerative bladder pain syndrome: Impact of Thiele massage on bladder and sexual domains. Low Urin Tract Symptoms. 2020 May;12(2):123-127. doi: 10.1111/luts.12291. Epub 2019 Oct 24.

Reference Type BACKGROUND
PMID: 31647172 (View on PubMed)

Huang MC, Hsieh CH, Chang WC, Chang ST, Lee MS. Assessment of treatment outcomes of interstitial cystitis with hydrodistention and bladder training by O'Leary-Sant Interstitial Cystitis Symptom and Problem Indices. Taiwan J Obstet Gynecol. 2018 Oct;57(5):718-721. doi: 10.1016/j.tjog.2018.08.019.

Reference Type BACKGROUND
PMID: 30342658 (View on PubMed)

Suskind AM, Berry SH, Ewing BA, Elliott MN, Suttorp MJ, Clemens JQ. The prevalence and overlap of interstitial cystitis/bladder pain syndrome and chronic prostatitis/chronic pelvic pain syndrome in men: results of the RAND Interstitial Cystitis Epidemiology male study. J Urol. 2013 Jan;189(1):141-5. doi: 10.1016/j.juro.2012.08.088. Epub 2012 Nov 16.

Reference Type BACKGROUND
PMID: 23164386 (View on PubMed)

McLennan MT. Interstitial cystitis: epidemiology, pathophysiology, and clinical presentation. Obstet Gynecol Clin North Am. 2014 Sep;41(3):385-95. doi: 10.1016/j.ogc.2014.05.004. Epub 2014 Jul 9.

Reference Type BACKGROUND
PMID: 25155120 (View on PubMed)

Jhang JF, Kuo HC. Pathomechanism of Interstitial Cystitis/Bladder Pain Syndrome and Mapping the Heterogeneity of Disease. Int Neurourol J. 2016 Nov;20(Suppl 2):S95-104. doi: 10.5213/inj.1632712.356. Epub 2016 Nov 22.

Reference Type BACKGROUND
PMID: 27915472 (View on PubMed)

Cox A. Management of interstitial cystitis/bladder pain syndrome. Can Urol Assoc J. 2018 Jun;12(6 Suppl 3):S157-S160. doi: 10.5489/cuaj.5324. No abstract available.

Reference Type BACKGROUND
PMID: 29875041 (View on PubMed)

Beckett MK, Elliott MN, Clemens JQ, Ewing B, Berry SH. Consequences of interstitial cystitis/bladder pain symptoms on women's work participation and income: results from a national household sample. J Urol. 2014 Jan;191(1):83-8. doi: 10.1016/j.juro.2013.07.018. Epub 2013 Jul 17.

Reference Type BACKGROUND
PMID: 23872030 (View on PubMed)

Huffman MM, Slack A, Hoke M. Bladder Pain Syndrome. Prim Care. 2019 Jun;46(2):213-221. doi: 10.1016/j.pop.2019.02.002. Epub 2019 Apr 1.

Reference Type BACKGROUND
PMID: 31030822 (View on PubMed)

Marcu I, Campian EC, Tu FF. Interstitial Cystitis/Bladder Pain Syndrome. Semin Reprod Med. 2018 Mar;36(2):123-135. doi: 10.1055/s-0038-1676089. Epub 2018 Dec 19.

Reference Type BACKGROUND
PMID: 30566978 (View on PubMed)

Rapkin AJ, Kames LD. The pain management approach to chronic pelvic pain. J Reprod Med. 1987 May;32(5):323-7.

Reference Type BACKGROUND
PMID: 2439689 (View on PubMed)

Sun Y, Liu Y, Liu B, Zhou K, Yue Z, Zhang W, Fu W, Yang J, Li N, He L, Zang Z, Su T, Fang J, Ding Y, Qin Z, Song H, Hu H, Zhao H, Mo Q, Zhou J, Wu J, Liu X, Wang W, Pang R, Chen H, Wang X, Liu Z. Efficacy of Acupuncture for Chronic Prostatitis/Chronic Pelvic Pain Syndrome : A Randomized Trial. Ann Intern Med. 2021 Oct;174(10):1357-1366. doi: 10.7326/M21-1814. Epub 2021 Aug 17.

Reference Type BACKGROUND
PMID: 34399062 (View on PubMed)

Xu Y, Chen Y, Shi Y, Lu J, Wu Z, Liu Z, Chen Y, Ni W, Ding Q, Dai W, Wu X, Fang J, Wu Y. Electro-Acupuncture for Bladder Pain Syndrome: A Protocol of a Randomized Controlled Trial and Study for Central Mechanism. J Pain Res. 2022 Jul 13;15:1959-1970. doi: 10.2147/JPR.S370751. eCollection 2022.

Reference Type DERIVED
PMID: 35860417 (View on PubMed)

Other Identifiers

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2022-02-13

Identifier Type: -

Identifier Source: org_study_id