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Małgorzata Bernatek
Department of Health Sciences, Calisia UniversityKalisz, Poland
Margarita Grzemska
Department of Health Sciences, Calisia UniversityKalisz, Poland
Jacek Piątek
Department of Health Sciences, Calisia UniversityKalisz, Poland
Henning Sommermeyer
Department of Health Sciences, Calisia UniversityKalisz, Poland