Endoscopy.
Putnam
S G
SG
D001650:Bile Duct Neoplasms / Q000628:therapy*; D018281:Cholangiocarcinoma / Q000628:therapy*; D003362:Cost-Benefit Analysis; D016145:Endoscopy, Digestive System; D005706:Gallbladder Neoplasms / Q000628:therapy*; D006801:Humans; D010166:Palliative Care; D015607:Stents / Q000191:economics