1. Department of Nursing, Pomeranian Medical University in Szczecin, Szczecin 71-210, Poland
2. Department of Statistics, Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Sosnowiec 41-200, Poland
3. Department of Functional Diagnostics and Physical Medicine, Pomeranian Medical University in Szczecin, Szczecin 71-210, Poland