Authors
Yordanka Mihaylova
jordanka.mihaylova@mu-varna.bg
Medical College of Varna, Medical University of Varna, Varna, Bulgaria
Sylvia Stamova
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Varna, Varna, Bulgaria
Emilia Georgieva
Medical College of Varna, Medical University of Varna, Varna, Bulgaria
Neli Ermenlieva
Department of Microbiology and Virology, Faculty of Medicine, Medical University of Varna, Varna, Bulgaria
Berna Beyti
Student of Medical College of Varna, Medical University of Varna, Varna, Bulgaria