T.C. Ministry of Health Kutahya Provincial Directorate of Health Kutahya University of Health Sciences Evliya Celebi Training and Research Hospital, Kütahya, Turkey
Centrum Med. Ibismed, Zabrze, Poland
Vojnomedicinska akademija, Belgrade, Serbia
Xenoscience, Inc., 21st Century Neurology, Phoenix, Arizona, United States
Bradenton Research Center, Bradenton, Florida, United States
Hygeia Hospital Tirana, Tirana, Albania
Institute of Cancer Research, London, United Kingdom
Dr. Penko Shotekov, Sofia, Bulgaria
UMHAT Alexandrovska, Sofia, Bulgaria
Dr. Eva Strijibis, Amsterdam, Netherlands
Military Medical Academy, Clinic of Infectious Diseases, Sofia, Bulgaria
UMHATEM N.I.Pirogov, Clinic of internal diseases, Sofia, Bulgaria
University Hospital Frankfurt, Infectious Diseases, Frankfurt, Germany
MHAT Pulse AD, Department of Neurology Diseases, Blagoevgrad, Bulgaria
UMHAT " Kaspela" EOOD, Department of Neurology Diseases, Plovdiv, Bulgaria
UMHAT "Kanev Ruse", Department of General and Vascular Neurology, Ruse, Bulgaria
University Clinic for Hematology - Skopje - Macedonian Hematology Association, Skopje, North Macedonia
Alliance Medical Research, LLC, Lighthouse Point, Florida, United States
Del Sol Research Management, LLC, Tucson, Arizona, United States