Authors
Elitsa H. Gyokova
Department of Obstetrics and Gynaecology, Medical University - Pleven
Yordan D. Popov
Department of Obstetrics and Gynaecology, Medical University - Pleven
Yoana G. Ivanova-Yoncheva
Department of Obstetrics and Gynaecology, Medical University - Pleven
Kamelia K. Dimitrova
Medical University - Pleven
Klaudia I. Dekova
Medical University - Pleven