[1] Hop Barbois, CHU Nancy, F-54500 Vandoeuvre Les Nancy, France
[2] Univ Paris 05, Nancy Univ, Univ Paul Verlaine Metz, EA Apemac 4360, Nancy, France
[3] Ctr Hosp Val Ariege, Foix, France
[4] Toulouse Univ, Inserm U558, Dept Epidemiol, Sch Med, Toulouse, France