[1] Hannover Med Sch, Abt Gastroenterol Hepatol & Endokrinol, D-30625 Hannover, Germany
[2] Tech Univ Munich, Helmholtz Zentrum Munchen, Inst Virol, D-8000 Munich, Germany
[3] Univ Halle Wittenberg, Klin & Poliklin Innere Med 1, D-4010 Halle, Germany
[4] Univ Klinikum Hamburg Eppendorf, Med Klin & Poliklin 1, Hamburg, Germany
[5] Humboldt Univ, Charite, Med Klin MS Hepatol & Gastroenterol, D-1086 Berlin, Germany
[6] Univ Regensburg, Inst Med Mikrobiol & Hyg, D-8400 Regensburg, Germany
[7] Univ Dusseldorf, Univ Klin Dusseldorf, Klin Gastroenterol Hepatol & Infektiol, D-4000 Dusseldorf, Germany
[8] Univ Witten Herdecke, HELIOS Klinikum Wuppertal, Zentrum Kinder & Jugendmed, Witten, Germany
[9] Univ Klinikum Heidelberg, Inst Pathol, Heidelberg, Germany
[10] Univ Leipzig, Univ Klinikum, Leipzig, Germany