1. Department of Endocrinology, Diabetology and Metabolic Diseases, Medical University of Lublin, Jaczewskiego 8, 20-954 Lublin, Poland
2. University Clinical Hospital No. 4 in Lublin, Jaczewskiego 8, 20-954 Lublin, Poland
3. Saint Queen Jadwiga’s Regional Clinical Hospital No. 2 in Rzeszow, Lwowska 60, 35-301 Rzeszów, Poland
4. Stefan Cardinal Wyszynski Province Specialist Hospital, al. Kraśnicka 100, 20-718 Lublin, Poland
5. Faculty of medicine, Medical University of Lublin, al. Racławickie 1, 20-059 Lublin, Poland