Associations between physical activity, selected lifestyle factors, and quality of life during puerperium - Ostrogórska, Patrycja; Hutniczak, Karolina; Humaj-Grysztar, Magdalena; Nawrot, Julia; Janczyk, Paula; Jagielski, Paweł; Matuszyk, Dorota (Nursing Problems / Problemy Pielęgniarstwa, 2018)