1. Department of Clinical Epidemiology and Biostatistics, and Department of Political Science, McMaster University, Ontario, Canada
2. Department of Management, University of St Andrews, St Andrews, Scotland
3. Informed Choice Research Department, Norwegian Health Services Research Centre, Oslo, Norway
4. Groupe de recherche interdisciplinaire en santé (GRIS) and Département d'administration de la santé, Université de Montréal, Montreal, Quebec, Canada
5. School of Business, University of Alberta, Edmonton, Alberta, Canada
6. The Management School, Royal Holloway, University of London, Egham, UK