Richardet J, Mallat A, Zafrani ES, Blazquez M, Bognel J, Campillo B. Csae Report: Prolonged Cholestasis with Ductopenia After Administration of Amoxicillin/Clavulanic Acid. Digestive Diseases and Sciences. 1999 Oct;44(10):1997–2000. doi: 10.1023/a:1026610015899.