Changes in maternity care in Poland perceived by midwives working in the SARS-CoV-2 pandemic. A preliminary study - Joanna Gotlib; Barbara Baranowska; Ewa Rzońca; Paulina Pawlicka; Urszula Tataj-Puzyna; Ilona Cieślak; Mariusz Jaworski; Mariusz Panczyk (Termedia Publishing House, 2022)