Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0039-6109(08)00093-5
Gallbladder Diseases free resource MedlinePlus Health Information https://medlineplus.gov/gallbladderdiseases.html
subscription/membership/fee required W.B. Saunders http://journals.elsevierhealth.com/retrieve/pii/S0039-6109(08)00093-5