Determinants of the clinical expression of amoxicillin-clavulanate hepatotoxicity: a prospective series from Spain - Lucena, M I; Andrade, R J; Fernández, M C; Spanish Group for the Study of Drug-Induced Liver Disease (Grupo de Estudio para las Hepatopatías Asociadas a Medicamentos (GEHAM)) (Hepatology, 2006)