[Surgical treatment of diseases of the biliary tract in patients over 50-years of age].
D000368:Aged / Q000601:surgery; D001659:Biliary Tract / Q000601:surgery*; D001662:Biliary Tract Surgical Procedures; D006801:Humans
AGED/surgery; BILIARY TRACT/surgery
Chirurgiczne leczenie schorzeń dróg 1zółciowych u osób po 50 roku 1zycia.