1. Health Promotion and Obesity Management Unit, Department of Pathophysiology, Medical Faculty in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
2. Institute of Medical Sciences, Medical College of Rzeszow University, University of Rzeszów, 35-601 Rzeszow, Poland
3. Department of Internal Diseases and Oncological Chemotherapy, Medical Faculty in Katowice, Medical University of Silesia, 40-027 Katowice, Poland
4. Department of Endocrinology and Neuroendocrine Tumors, Department of Pathophysiology and Endocrinology, Medical University of Silesia, 40-055 Katowice, Poland
5. Faculty of Medical Sciences and Health Sciences, University of Humanities and Technology in Radom, 26-600 Radom, Poland
6. Department of Psychiatry, Jagiellonian University Medical College, 31-008 Cracow, Poland
7. 2nd Department of General Surgery, Jagiellonian University Medical College, 31-008 Cracow, Poland
8. Department of General, Oncological and Bariatric Surgery, Centre of Postgraduate Medical Education, Orłowski Hospital, 00-416 Warsaw, Poland
9. The College of Family Physicians in Poland, 00-209 Warsaw, Poland