Biliary drainage.
D000368:Aged; D001646:Bile; D001660:Biliary Tract Diseases / Q000628:therapy*; D001661:Biliary Tract Neoplasms / Q000628:therapy; D004322:Drainage / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods*; D006801:Humans; D010166:Palliative Care; D019736:Prostheses and Implants