New hope for chronic hives: barzolvolimab shows promise in Long-Term trial
NCT ID NCT07256392
First seen Jun 27, 2026 · Last updated Aug 28, 2026 · Updated 6 times
Summary
This study looks at the long-term safety and effectiveness of barzolvolimab in adults with chronic spontaneous urticaria (CSU), a condition causing frequent hives and itching. Participants have already completed earlier phase 3 trials. The goal is to see how well the drug controls symptoms over time and to provide continued access to treatment.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 1,370 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Sep 2028
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Key Inclusion Criteria: 1. Written informed consent 2. Must have successfully completed the preceding phase 3 clinical trials (CDX0159-12 or CDX0159-13). 3. Both males and females of child-bearing potential must agree to use highly effective contraceptives when receiving barzolvolimab treatment and for 150 days after treatment. 4. Willing and able to comply with all study requirements and procedures, including completion of a daily symptom electronic diary. Key Exclusion Criteria: 1. Active pruritic skin condition in addition to CSU. 2. Medical condition that would cause additional risk or interfere with study procedures. 3. Participants without at least one documented UAS7 score from Weeks 64-68 of the CDX0159-12 or CDX0159-13 trials. There are additional criteria that your study doctor will review with you to confirm you are eligible for the study.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
131 sites in 23 countries. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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About Allergy
Pretoria, Gauteng, 0181, South Africa
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Advanced Clinical Research Institute (ACRI) - Florida
Tampa, Florida, 33607, United States
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Ajou University Hospital
Suwon, 16499, South Korea
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Alergo-med Ośrodek Badań Klinicznych Spólka z ograniczoną odpowiedzialnością
Tarnów, 33-100, Poland
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Alina Clinical Trials LLC
Dallas, Texas, 75225, United States
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Allergy Associates of Utah
Sandy City, Utah, 84093, United States
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Allergy and Asthma Associates of Southern California - Laguna Niguel - CRN
Laguna Niguel, California, 92677, United States
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Allergy and Asthma Care of Waco
Waco, Texas, 76712, United States
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Allergy and Asthma Specialists PSC
Owensboro, Kentucky, 42301, United States
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Aprillus Asistencia e Investigacion de Arcis Salud SRL
CABA, Buenos Aires F.D., 1406, Argentina
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Asthma and Allergy Associates
Colorado Springs, Colorado, 80907, United States
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Auni Allergy
Findlay, Ohio, 45840, United States
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Azienda Ospedaliera Ordine Mauriziano di Torino
Torino, 20128, Italy
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Bexley Dermatology Research
Bexley, Ohio, 43209, United States
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CD8 Klinika
Kaunas, LT-44192, Lithuania
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CHRU Nantes Hôtel Dieu
Nantes, 44093, France
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CHU de Nice-Hôpital L'Archet
Nice, 06202, France
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Cahaba Dermatology & Skin Health Center, LLC
Birmingham, Alabama, 35244, United States
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Center for Dermatology & Plastic Surgery - Avacare
Scottsdale, Arizona, 85260, United States
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Centre de Recherche Saint-Louis
Québec, G1W4R4, Canada
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Centricity Research Columbus Dermatology
Columbus, Georgia, 31904, United States
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Centro Internacional de Estudios Clinicos (CIEC)
Recoleta, 8420383, Chile
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Centro Respiratorio Infantil
Rosario, Sante Fe, 2000, Argentina
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Centro de Estudios Clínicos e Investigaciones Médicas CeCim
Santiago, 8350595, Chile
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Centrum Badan Klinicznych PI-House sp. z o.o.
Gdansk, 80-546, Poland
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Centrum Medyczne ALL-MED Badania Kliniczne
Krakow, 30-033, Poland
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Centrum Medyczne Katowice - PRATIA
Katowice, 40-081, Poland
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Centrum Medyczne Pratia Częstochowa
Częstochowa, 42-217, Poland
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Centrum Medyczne Pratia Poznan
Poznan, 60-185, Poland
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Centrum Nowoczesnych Terapii Dobry Lekarz Sp. z o.o.
Krakow, 31-011, Poland
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Chang Gung Medical Foundation Kaohsiung Chang Gung Memorial Hospital
Kaohsiung City, 833, Taiwan
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China Medical University Hospital
Taichung, 404, Taiwan
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Cityclinic Przychodnia Lekarsko Psychologiczna Matusiak Spółka Partnerska
Wroclaw, 50-566, Poland
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Clinica Mayo de Urgencias
San Miguel de Tucumán, Tucumán Province, 4000, Argentina
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Clinical Partners LLC
Johnston, Rhode Island, 02919, United States
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Cliniques Universitaires Saint-Luc
Brussels, 1200, Belgium
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Conexa Investigación Clínica S.A.
CABA, Buenos Aires F.D., 1012, Argentina
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Cornerstone Dermatology
Coorparoo, QSL, 4151, Australia
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Deluxe Health Center
Miami Lakes, Florida, 33014, United States
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Dermacross Clinica Dermatologica
Vitacura, 7630000, Chile
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Dermatology Research Associates
Los Angeles, California, 90045, United States
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Diagnostic Consultative Centre - Focus-5 - LZIP EOOD
Sofia, 1463, Bulgaria
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Diagnostic and Consulting Center Aleksandrovska EOOD
Sofia, 1431, Bulgaria
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Direct Helpers Research Center
Hialeah, Florida, 33012, United States
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Dolphin Medical Research
Doral, Florida, 33172, United States
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ETG Warszawa Sp. z o.o.
Warsaw, 02-677, Poland
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Encore Medical Research of Boynton Beach LLC
Boynton Beach, Florida, 33436, United States
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Endeavor Health
Skokie, Illinois, 60026, United States
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Enroll SpA - Dr. Manuel Barros Borgono
Providencia, 7500000, Chile
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EuroMediCare Szpital Specjalistyczny z Przychodnia we Wroclawiu
Wroclaw, 54-144, Poland
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Evidence Based Medical Educator Inc.
Toronto, Ontario, M5G1E2, Canada
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G.S.V.M. Medical College
Nashik, Maharashtra, 422101, India
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GCP, Global Clinical Professionals
St. Petersburg, Florida, 33705, United States
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Gentofte Hospital
Hellerup, 2900, Denmark
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Ginemedica Sp. z o.o.
Wroclaw, 50-414, Poland
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Global Clinical Trials (Pty) Ltd - Pretoria
Pretoria, Gauteng, 0157, South Africa
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Hanyang University Seoul Hospital
Seoul, 4763, South Korea
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Hospital A. Syggros
Athens, 16121, Greece
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Hospital Clinic de Barcelona
Barcelona, 8036, Spain
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Hospital Clinico San Carlos - Lopez Bran
Madrid, 28040, Spain
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Hospital General Universitario Dr. Balmis
Alicante, 03010, Spain
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Hospital Kuala Lumpur
Kuala Lumpur, 50586, Malaysia
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Hospital Raja Permaisuri Bainun
Ipoh, 30450, Malaysia
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Hospital Sultan Ismail
Johor Bahru, 81100, Malaysia
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Hospital Umum Sarawak
Kuching, 93586, Malaysia
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Hospital Universitario Vall d'Hebron
Barcelona, 8035, Spain
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Hospital Universitario de La Plana
Villarreal de Huerva, 12540, Spain
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Hospital del Mar
Barcelona, 8003, Spain
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Institute for Asthma and Allergy
Wheaton, Maryland, 20902, United States
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Instituto Médico de la Fundación Estudios Clínicos
Rosario, Sante Fe, S2000DEJ, Argentina
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Instituto de Especialidades de la Salud Rosario - Clínica del Tórax
Rosario, Sante Fe, 2000, Argentina
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Joel Liem Medicine Professional Corporation
Windsor, Ontario, N8X 2G1, Canada
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John Hopkins University
Baltimore, Maryland, 21224, United States
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Kaohsiung Veterans General Hospital
Kaohsiung City, 813414, Taiwan
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Kern Research
Bakersfield, California, 93301, United States
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Klinika Ambroziak Dermatologia
Warsaw, 02-953, Poland
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LA Universal Research Center, Inc.
Los Angeles, California, 90057, United States
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Lima's Excellence In Allergy And Dermatology Research (Leader) Inc.
Hamilton, Ontario, L8L 3C3, Canada
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Luxderm Specjalistyczny Gabinet Dermatologiczny Dorota Krasowska
Lublin, 20-753, Poland
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Lynderm Research Inc
Markham, Ontario, L3P 1X3, Canada
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MICS Centrum Medyczne Toruń
Torun, 87-100, Poland
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MacKay Memorial Hospital
Taipei, 10449, Taiwan
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Markowitz Medical PLLC dba OptiSkin Medical
New York, New York, 10128, United States
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Medical Center Hera EOOD
Sofia, 1510, Bulgaria
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Medical Center Iskar EOOD
Sofia, 1000, Bulgaria
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Medical Center Medtech Services EOOD
Haskovo, 6304, Bulgaria
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Medical Center Pulmovision
Sofia, 1756, Bulgaria
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Medical Centre Asklepii OOD
Dupnitsa, 2600, Bulgaria
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Medical Research of Arizona
Scottsdale, Arizona, 85251, United States
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Medicome Sp. z o.o.
Oświęcim, 32-600, Poland
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Medizinisches Versorgungszentrum DermaKiel GmbH
Kiel, Schleswig-Holstein, 24148, Germany
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Miami Dade Medical Research Institute, LLC
Miami, Florida, 33176, United States
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Michigan Center for Research Co., LLC
Clarkston, Michigan, 48346, United States
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Midwest Clinical Research
St Louis, Missouri, 63141, United States
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Montana Medical Research, Inc.
Missoula, Montana, 59808, United States
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NZOZ Specjalistyczny Ośrodek Dermatologiczny "DERMAL"
Bialystok, 15-453, Poland
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National Taiwan University Hospital
Taipei, 10048, Taiwan
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National Taiwan University Hospital - Hsin-Chu Branch
Hsinchu, 300, Taiwan
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Newtown Clinical Research Centre
Newtown, Gauteng, 2001, South Africa
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Niepubliczny Specjalistyczny ZOZ Puls-Med s.c.
Skarżysko-Kamienna, 26-110, Poland
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North Bay Dermatology Center
North Bay, Ontario, P1B 3Z7, Canada
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Outpatient Clinic for IP for Specialized Outpatient Medical Care in Allergology-Dr.Cholak
Razgrad, 7200, Bulgaria
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Oyster & Pearl Hospitals
Pune, Maharashtra, 411005, India
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Portland Allergy and Asthma
Clackamas, Oregon, 97015, United States
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ProDerma
Dülmen, North Rhine-Westphalia, 48249, Germany
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Rainey & Finklea San Antonio (RFSA) Dermatology
San Antonio, Texas, 78213, United States
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Respiratory Medicine Research Institute of Michigan PLC
Ypsilanti, Michigan, 48197, United States
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Rosenpark Research
Darmstadt, Hesse, 64283, Germany
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Sarasota Clinical Research
Sarasota, Florida, 34239, United States
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Seoul National University Hospital
Seoul, 3080, South Korea
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Shree Hospital & Critical Care Centre
Nagpur, Maharashtra, 440009, India
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Synapta Clinical Research Centre
Durban, KwaZulu-Natal, 4001, South Africa
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Synexus Polska Sp. z o.o. Oddzial w Katowicach
Katowice, 40-040, Poland
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Thammasat University Hospital
Khlong Luang, 12120, Thailand
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The Alfred Hospital - Kern
Melbourne, Victoria, 3004, Australia
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The Diagnostic-Consultative Centre Ascendent EOOD
Sofia, 1202, Bulgaria
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The South Bend Clinic - Avacare
South Bend, Indiana, 46617, United States
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Toledo Institute for Clinical Research
Toledo, Ohio, 43617, United States
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Toledo Institute of Clinical Research
Toledo, Ohio, 43617, United States
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ULS da Arrábida, EPE - Hospital de São Bernardo
Setúbal, 2910-548, Portugal
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ULS da Região de Aveiro, EPE - Hospital Infante D. Pedro
Aveiro, 3814-501, Portugal
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ULS de Coimbra, EPE - Hospitais da Universidade de Coimbra
Coimbra, 3004-561, Portugal
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ULS de Santa Maria,EPE - Hospital de Santa Maria
Lisbon, 1649-035, Portugal
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University General Hospital ''ATTIKON'' - General Hospital of West Attica H AGIA VARVARA
Chaïdári, Attica, 12462, Greece
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University Multiprofile Hospital for Active Treatment and Emergency Medicine N. I. Pirogov EAD
Sofia, 1606, Bulgaria
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University of Cape Town Lung Institute (UCTLI)
Mowbray, Western Cape, 7700, South Africa
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VIDA Dermatology
Edmonton, Alberta, T6H 4J8, Canada
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Velocity Clinical Research, North London
North Finchley, N12 8BU, United Kingdom
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Washington University School of Medicine
St Louis, Missouri, 63141, United States
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Western Sky Medical Research
El Paso, Texas, 79912, United States
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Worthwhile Clinical Trials
Benoni, Gauteng, 1501, South Africa
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