Therapy response in chronic hepatitis C patients is influenced by 25-OH Vitamin D serum levels and VDR (NR1I1) gene polymorphisms - Baur, K; Mertens, JC; Schmitt, J; Iwata, R; Stieger, B; Frei, P; Seifert, B; Müllhaupt, B; Geier, A (Zeitschrift für Gastroenterologie, 2011)