[1] Hop Paul Brousse, AP HP, Ctr Hepatobiliaire, INSERM,U785, F-94804 Villejuif, France
[2] Hop Paul Brousse, AP HP, Lab Antomopathol, F-94804 Villejuif, France
[3] Hop Paul Brousse, AP HP, Unite Maladies Infect, F-94804 Villejuif, France
[4] Hop Paul Brousse, AP HP, Virol Lab, F-94804 Villejuif, France
[5] Univ Paris Sud, UMR S 785, Villejuif, France
[6] CHU Hotel Dieu, Inst Maladies Appareil Digestif, Nantes, France