1. Ma-na-ma Huisartsgeneeskunde, KU Leuven, Belgium.
2. Department of Family Medicine, Wroclaw Medical University, Wroclaw, Poland.
3. MEDFIT KAROLINA KŁODA, Szczecin, Poland.
4. Department of Endocrinology and Diabetology, Nicolaus Copernicus University, Collegium Medicum, Bydgoszcz, Poland.