1. Oxford Outcomes, Oxford, United Kingdom (RP)
2. Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada (DF)
3. Ivey School of Business, University of Western Ontario, London, Canada (GSZ)
4. Unit of PharmacoEpidemiology and PharmacoEconomics, Department of Pharmacy, University of Groningen, Groningen, Netherlands (MP)
5. Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, and Center for Infectious Disease Control, RIVM, Bilthoven, Netherlands (MK)