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Kovari, H; Ledergerber, B; Battegay, M; Rauch, A; Hirschel, B; Foguena, A K; Vernazza, P; Bernasconi, E; Mueller, N J; Weber, R (2010). Incidence and risk factors for chronic elevation of alanine aminotransferase levels in HIV-infected persons without hepatitis b or c virus co-infection. Clinical Infectious Diseases, 50(4):502-511.