1. National Institute for Health and Disability Insurance , Galileelaan 5/01, 1210 Brussels , Belgium
2. Global Health Institute, Department of Family Medicine & Population Health (FAMPOP), University of Antwerp , Antwerp , Belgium
3. Data Science Institute, Interuniversity Institute for Biostatistics and statistical Bioinformatics (I-BioStat), UHasselt , Diepenbeek , Belgium
4. Laboratory of Medical Microbiology, Vaccine & Infectious Disease Institute (VAXINFECTIO), University of Antwerp , Antwerp , Belgium
5. Centre for General Practice, Department of Family Medicine & Population Health (FAMPOP), University of Antwerp , Antwerp , Belgium
6. Nuffield Department of Primary Care Health Sciences, University of Oxford , Oxford , United Kingdom
7. Julius Centre for Health, Sciences and Primary Care, University Medical Centre Utrecht , Utrecht , The Netherlands
8. Primary Care Research Centre, Aldermoor Health Centre, Primary Care Population Sciences and Medical Education Unit, Faculty of Medicine, University of Southampton , Southampton , UK