1. Department of Clinical Psychology, Poznan University of Medical Sciences, ul. Bukowska 70, Poznan 60-812, Poland
2. Department of Pediatric Diabetes, Auxology and Obesity, Poznan University of Medical Sciences, Poznan, Poland
3. Department of Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
4. Department of Clinical Psychology, Poznan University of Medical Sciences, Poznan, Poland