1 Centre d'Epidémiologie et de Recherche en santé des Populations, Team EQUITY, Université Toulouse III Paul Sabatier, Toulouse, France marie-anne.durand@dartmouth.edu.
2 Département des policliniques, Unisanté, Lausanne, Vaud, Switzerland.
3 The Dartmouth Institute for Health Policy & Clinical Practice, Dartmouth College, Lebanon, NH, USA.
4 Department of Communication, Pompeu Fabra University, Barcelona, Spain.