[1] Grp Hosp Pitie Salpetriere, AP HP, Fac Med Pierre & Marie Curie, Lab Bacteriol Hyg, F-75634 Paris 13, France
[2] Univ Paris 06, EA1541 ER5, Paris, France
[3] Grp Hosp Charles Foix Jean Rostand, AP HP, Lab Microbiol Hyg, Ivry, France
[4] Grp Hosp Charles Foix Jean Rostand, AP HP, Equipe Operat Hyg, Ivry, France
[5] Grp Hosp Pitie Salpetriere, AP HP, Unite Fonct Biostat, F-75634 Paris 13, France
[6] Grp Hosp Charles Foix Jean Rostand, AP HP, Serv Med Interne Geriatr, Ivry, France
[7] Grp Hosp Charles Foix Jean Rostand, AP HP, Unite Geriatrie Aigue, Ivry, France