1. 1 Community Health Centre Ljubljana, Primary Healthcare Research and Development Institute , Metelkova ulica 9 , Ljubljana , Slovenia
2. 2 University of Ljubljana, Faculty of Medicine, Department of Family Medicine , Poljanski nasip 58 , Ljubljana , Slovenia
3. 3 Primary Healthcare Centre Trebnje , Goliev trg 3 , Trebnje , Slovenia
4. 4 Primary Healthcare Centre Slovenj Gradec , Partizanska pot 16 , Slovenj Gradec , Slovenia
5. 5 University of Maribor, Faculty of Medicine, Department of Family Medicine , Taborska ulica 8 , Maribor , Slovenia