1. Irish College of General Practice, Dublin, Ireland
2. Department of Family Medicine and Population Health, University of Antwerp, Antwerp, Belgium
3. Faculty of Medicine, Clinic of Internal Diseases, Family medicine and Oncology, Institute of Clinical Medicine, Vilnius University, Vilnius, Lithuania
4. Department of Family Medicine, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
5. School of Medicine, University College Dublin, Dublin, Ireland
6. Department of General Practice and Elderly Care, Groningen University, Groningen, The Netherlands