Authors
Tatyana D. Itova
Department of Neonatology, University Hospital Medika, Rousse, Bulgaria
Victoria A. Georgieva
Department of Obstetrics and Gynecology, Faculty of Medicine, Medical University – Pleven, Bulgaria
© 2022 Tatyana D. Itova, Victoria A. Georgieva, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.