1. Department of Nursing, Pomeranian Medical University in Szczecin, 71-210 Szczecin, Poland
2. Department of Nursing, Collegium Medicum, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
3. Department of Education and Research of Health Sciences, Faculty of Health Sciences, Medical University of Warsaw, Litewska 14/16 St., 00-518 Warsaw, Poland
4. Department of Family and Geriatric Nursing, Faculty of Health Sciences, Medical University of Lublin, Staszica 6 Street, 20-081 Lublin, Poland