1. Heidelberger Institut für Global Health Universitätsklinikum Heidelberg Heidelberg Germany
2. Département de Médecine Sociale et Préventive, École de Santé Publique Université de Montréal Montreal Quebec Canada
3. Department of Epidemiology, Biostatistics and Occupational Health, School of Population and Global Health, Faculty of Medicine and Health Sciences McGill University Montreal Quebec Canada
4. Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research Jewish General Hospital Montreal Quebec Canada