Changes in maternity care in Poland perceived by midwives working in the SARS-CoV-2 pandemic. A preliminary study - Gotlib, Joanna; Baranowska, Barbara; Rzońca, Ewa; Pawlicka, Paulina; Tataj-Puzyna, Urszula; Cieślak, Ilona; Jaworski, Mariusz; Panczyk, Mariusz (Nursing Problems / Problemy Pielęgniarstwa, 2021)