1. Department of Clinical Laboratory, Medical University – Varna “Prof. Dr. Paraskev Stoyanov”,
Varna, Bulgaria
2. Department of Pharmaceutical Sciences, Medical University – Varna “Prof. Dr. Paraskev Stoyanov”,
Varna, Bulgaria
3. Department of Internal Medicine – Clinic of Gastroenterology, Medical University – Varna “Prof. Dr. Paraskev Stoyanov”,
Varna, Bulgaria
4. Department of Immunology, Medical University – Varna “Prof. Dr. Paraskev Stoyanov”,
Varna, Bulgaria
5. Central Laboratory of Therapeutic Drug Management and Clinical Pharmacology, Alexandrovska University Hospital, Medical University of Sofia,
Sofia, Bulgaria