High prevalence of chronic hepatitis C in 8009 patients with migration background living in Germany - Buggisch, P; Petersen, J; Urlea-Schön, I; Rossol, S; Möller, B; Heyne, R; Weissmann, J; Malek, M; Teuber, G; John, C; Hey, KH; Melcher, L; Witthöft, T; Blaak, H; Heuser, A; Bilzer, M (Zeitschrift für Gastroenterologie, 2012)