1. Central Clinical Hospital, Medical University of Łódź, Pomorska 251, 92-213 Łódź, Poland
2. Faculty of Mathematics and Computer Science, University of Łódź, Banacha 22, 90-238 Łódź, Poland
3. Department of Internal Medicine, Rehabilitation and Physical Medicine, Medical University of Łódź, plac Gen. Józefa Hallera 1, 90-645 Łódź, Poland