Blood donation screening for hepatitis B virus core antibodies: The importance of confirmatory testing and initial implication for rare blood donor groups by Fu, MX, Ingram, J, Roberts, C, Nurmi, V, Watkins, E, Dempsey, N, Golubchik, T, Breuer, J, Brailsford, S, Irving, WL, Andersson, M, Simmonds, P, Harvala, H