[1] Univ Hosp St Etienne, Dept Infect Dis, Infect Control Unit, F-42055 St Etienne 02, France
[2] Hosp Civils Lyon, Serv Biostat, 162 Ave Lacassagne, F-69003 Lyon, France
[3] Univ Lyon, F-69000 Lyon, France
[4] Univ Lyon 1, F-69100 Villeurbanne, France
[5] CNRS, UMR 5558, Equipe Biostat Sante, Lab Biomitrie & Biol Evolut, F-69100 Villeurbanne, France
[6] Univ Hosp St Etienne, Lab Bacteriol Virol Hyg, F-42055 St Etienne 02, France
[7] Univ Hosp St Etienne, Nephrol & Transplant Unit, F-42055 St Etienne 02, France
[8] Univ Hosp St Etienne, Intens Care Unit, F-42055 St Etienne 02, France