Authors
S. Tsanova-Savova
s.tsanova-savova@mc.mu-sofia.bg
Medical College Yordanka Filaretova, Medical University – Sofia, Bulgaria
S. Velikov
Faculty of Public Health, Medical University – Sofia, Bulgaria
S. Paneva
Medical College Yordanka Filaretova, Medical University – Sofia, Bulgaria
P. Koleva
Medical College Yordanka Filaretova, Medical University – Sofia, Bulgaria
P. Nikolchova
Medical College Yordanka Filaretova, Medical University – Sofia, Bulgaria
D. Etugov
Medical College Yordanka Filaretova, Medical University – Sofia, Bulgaria
Z. Savova
Medical College Yordanka Filaretova, Medical University – Sofia, Bulgaria
