Antibody Response to Hepatitis B Virus Vaccine is Impaired in Patients With Inflammatory Bowel Disease on Infliximab Therapy. Issue 2 (18th January 2018) - Pratt, Perry K; David, Nunes; Weber, Horst C; Little, Frédéric F; Kourkoumpetis, Themistoklis; Patts, Gregory J; Weinberg, Janice; Farraye, Francis A