Authors
S. Stoyanov
Department of Obstetrics and Gynecology, Medical Faculty, Trakia University – Stara Zagora, Bulgaria
K. Ivanova
Department of General and Clinical Pathology, Medical Faculty, Trakia University – Stara Zagora, Bulgaria
I. Koleva
Department of Obstetrics and Gynecology, Medical Faculty, Trakia University – Stara Zagora, Bulgaria
