Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S1089-3261(10)00082-6
Bile Duct Diseases free resource MedlinePlus Health Information https://medlineplus.gov/bileductdiseases.html
subscription/membership/fee required W.B. Saunders http://journals.elsevierhealth.com/retrieve/pii/S1089-3261(10)00082-6