1. Department of Family Medicine, CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands
2. General Practice Research Unit, Department of Community Medicine, The Arctic University of Tromsø, Tromsø, Norway
3. Department of Family and Community Medicine, Saint Louis University School of Medicine, St. Louis, MO, United States
4. Advanced HEAlth Data (AHEAD) Research Institute, Saint Louis University School of Medicine, 1008 S. Spring, St. Louis, MO, United States