title: [On the problem of classification of cholelithiasis].
authors.forename: A A
authors.initials: AA
authors.lastname: Il'chenko
mesh_terms: D001646:Bile / Q000737:chemistry; D002763:Cholecystectomy; D002769:Cholelithiasis / Q000145:classification* / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D014463:Ultrasonography