Rise in alanine aminotransferase after HCV treatment is a highly sensitive screen for treatment failure by Flower, B, Nguyen Thi Ngoc, P, McCabe, L, Le Ngoc, C, Vo Thi, T, Thi Kim, HV, Dang Trong, T, Rahman, M, Thwaites, G, Walker, AS, Hung, LM, Vinh Chau, NV, Cooke, GS, Day, JN