[1] Univ Antwerp, Dept Epidemiol & Social Med, Viral Hepatitis Prevnet Board, WHO Collaborating Ctr Prevent & Control Viral Hep, BE-2610 Antwerp, Belgium
[2] WHO, CH-1211 Geneva, Switzerland
[3] Robert Koch Inst, Dept Infect Dis Epidemiol, Unit Gastrointestinal Infect Zoonoses & Trop Infe, D-1000 Berlin, Germany
[4] Robert Koch Inst, Dept Infect Dis Epidemiol, Unit HIV AIDS STI & Blood Borne Infect, D-1000 Berlin, Germany
[5] Univ Klinikum Charite, Gesundheitssyst Forsch, Berlin, Germany
[6] Univ Regensburg, Inst Med Mikrobiol & Hyg, D-8400 Regensburg, Germany
[7] Univ Giessen, Univ Klinikum, Inst Med Virol, Giessen, Germany
[8] Karolinska Inst, Stockholm, Sweden
[9] Malarsjukhuset, Dept Infect Dis, Eskilstuna, Sweden
[10] Norwegian Inst Publ Hlth, Div Infect Dis Control, Oslo, Norway