1 EA 3279, CEReSS - Research Centre on Health Services and Quality of Life, Aix Marseille University, 27, boulevard Jean-Moulin, 13385 Marseille, France. Electronic address: karine.baumstarck@univ-amu.fr.
2 EA 3279, CEReSS - Research Centre on Health Services and Quality of Life, Aix Marseille University, 27, boulevard Jean-Moulin, 13385 Marseille, France; Epidemiology and Health Economy Department, Aix Marseille University, 27, boulevard Jean-Moulin, 13385 Marseille, France.
3 Epidemiology and Health Economy Department, Aix Marseille University, 27, boulevard Jean-Moulin, 13385 Marseille, France.
4 EA 3279, CEReSS - Research Centre on Health Services and Quality of Life, Aix Marseille University, 27, boulevard Jean-Moulin, 13385 Marseille, France; Fédération des Hôpitaux de Polyhandicap et Multihandicap, San Salvadour Hospital, University Hospital of Paris, 4312 Rte de l'Almanarre, 83400 Hyères, France.