[1] Univ Warmia & Mazury, Coll Med, Dept Nursing, 14 C Zolnierska St, PL-10719 Olsztyn, Poland
[2] Pomeranian Med Univ, Dept Nursing, 48 Zolnierska St, PL-71210 Szczecin, Poland
[3] Med Univ Gdansk, Inst Nursing & Midwifery, 3a M Sklodowskiej Curie St, PL-80227 Gdansk, Poland
[4] Nicolaus Copernicus Univ Torun, Dept Basic Clin Skills & Postgrad Educ Nurses & M, 1 Lukasiewicza St, PL-85821 Bydgoszcz, Poland
[5] Jagiellonian Univ, Med Coll, Fac Hlth Sci, Dept Internal Med & Community Nursing,Inst Nursin, 12 Michalowskiego St, PL-30688 Krakow, Poland
[6] Jan Kochanowski Univ Kielce, Coll Med, 19A 9 Wiekow Kielc St, PL-25369 Kielce, Poland