Authors
Aleksandra Łata
Faculty of Health Sciences, Medical University of Warsaw
Piotr Węgrzyn
Department of Obstetrics and Perinatology, Faculty of Health Sciences, Medical University of Warsaw
© 2019 Aleksandra Łata, Barbara Baranowska, Piotr Węgrzyn, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.