Cholangiocarcinoma--what level of evidence should we have?
Abrams
Ross A
RA
D001650:Bile Duct Neoplasms / Q000628:therapy*; D001653:Bile Ducts, Intrahepatic; D018281:Cholangiocarcinoma / Q000453:epidemiology* / Q000628:therapy*; D002986:Clinical Trials as Topic / Q000639:trends*; D019317:Evidence-Based Medicine / Q000639:trends*; D006801:Humans; D016896:Treatment Outcome