1. Clinical Pharmacology Unit, Department of Basic and Applied Medical Sciences, Ghent University, Ghent, Belgium
2. Department of Public Health and Primary Care, Ghent University, Ghent, Belgium
3. Family Medicine and Population, Health University of Antwerp, Antwerp, Belgium
4. Faculty of Medicine, Primary Care Clinical Unit, University of Queensland, Brisbane, Australia
5. Department of Family Medicine and Primary Health Care, Ghent University, Ghent, Belgium
6. General practice “Het Spoor”, Antwerp, Belgium