title: Nonoperative retained biliary tract stone extraction. A new roentgenologic technique.
mesh_terms: D000328:Adult; D000368:Aged; D002404:Catheterization / Q000295:instrumentation*; D002933:Cineradiography; D005260:Female; D005471:Fluoroscopy; D042882:Gallstones / Q000000981:diagnostic imaging / Q000628:therapy*; D006500:Hepatic Duct, Common; D006801:Humans; D007440:Intubation / Q000295:instrumentation; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D011829:Radiation Dosage; D011834:Radiation Monitoring; D013679:Technology, Radiologic
chemical_list: D011095:Polyethylenes