[1] Aix Marseille Univ, CEReSS Res Ctr Hlth Serv & Qual Life, EA 3279, 27 Blvd Jean Moulin, F-13385 Marseille, France
[2] Assistance Publ Hop Marseille, Epidemiol & Hlth Econ Dept, 27 Blvd Jean Moulin, F-13385 Marseille, France
[3] Aix Marseille Univ, Social Psychol Lab, UR 849, LPS, 29 Av Robert Schuman, F-13621 Aix En Provence, France
[4] UGECAM, Gen Union Hlth Insurance Fund Union Gen Caisse Ass, 26-50 Ave Prof Andre Lemierre, F-75986 Paris, Ile De France, France
[5] Hendaye Hosp, AP HP, Route Corniche, F-64700 Hendaye, France
[6] CESAP, Com Etud Educ & Soins Aupres Personnes Polyhandica, Comm Studies Educ & Care People Multiple Disabil, 62 Rue Glaciere, F-75013 Paris, France
[7] Roche Guyon Hosp, AP HP, Serv Polyhandicap Pediat, 1 Rue Justinien Blazy, F-95780 La Roche Guyon, France
[8] San Salvadour Hosp, AP HP, Hosp Federat Hop Polyhandicap & Multihandicap, 4312 Rte Almanarre, F-83400 Hyeres, France