1. Department of Organization and Economics of Pharmacy, Faculty of Pharmacy, Medical University of Sofia, 1000 Sofia, Bulgaria
2. Department of Endocrinology, USHATE “Acad. Ivan Penchev”, Medical University of Sofia, 1000 Sofia, Bulgaria
3. Department of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, 1000 Sofia, Bulgaria