1. Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
2. Heliodor Święcicki Clinical Hospital, Poznan, Poland
3. Department of Computer Science and Statistics, Poznan University of Medical Sciences, Poznan, Poland
4. Chair and Department of Gastroenterology, Dietetics and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
5. Department of Physiotherapy, Poznan University of Medical Sciences, Poznan, Poland