1. Department of Family Medicine, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey;
2. Department of Family Medicine, School CAPHRI, Maastricht University, Maastricht, the Netherlands;
3. Academic Center for General Practice/Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium;
4. Department of Methodology & Statistics, School CAPHRI, Maastricht University, Maastricht, the Netherlands;
5. Department of Medical Informatics, Erasmus Medical Centre, Rotterdam, the Netherlands