Arnaud Chiolero1, Daniela Anker2. 1. Institute of Primary Health Care (BIHAM), University of Bern, 3000 Bern, Switzerland. Electronic address: achiolero@gmail.com. 2. Institute of Primary Health Care (BIHAM), University of Bern, 3000 Bern, Switzerland; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada.