Authors
N. Popovski
Clinic of Obstetrics and Gynaecology, University Hospital Pleven, Department of Obstetrics and Gynaecology, Medical University, Pleven, Bulgaria
A. Nikolov
Department of Pre-clinical and Clinical Sciences, Faculty of Pharmacy, Medical University, Pleven, Bulgaria
Ts. Lukanov
Department of Clinical Laboratory, Clinical Immunology and Allergology, Medical University, Pleven, Bulgaria
S. Blazheva
Department of Clinical Laboratory, Clinical Immunology and Allergology, Medical University, Pleven, Bulgaria
T. Totev
Clinic of Obstetrics and Gynaecology, University Hospital Pleven, Department of Obstetrics and Gynaecology, Medical University, Pleven, Bulgaria
