1 Harvard T H Chan School of Public Health, Department of Social and Behavioral Sciences, Boston, MA, USA. Electronic address: gruebner@hsph.harvard.edu.
2 Loughborough University, School of Business and Economics, Centre for Information Management, Loughborough, UK.
3 Montclair State University, Department of Psychology, Montclair, NJ, USA.
4 Wilfrid Laurier University, Department of Health Sciences, Waterloo, ON, Canada.
5 Cochrane France, Centre de recherche Epidémiologies et Biostatistique, INSERM, Equipe Méthodes de l'évaluation thérapeutique des maladies chroniques, Hôpital Hôtel-Dieu, Paris, France.
6 Harvard T H Chan School of Public Health, Department of Social and Behavioral Sciences, Boston, MA, USA.
7 Boston University, School of Public Health, Boston, MA, USA.