Rajgopal, S U Trace elements in biliary calculi. [electronic resource] - Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology Jan 1988 - 15-7 p. digital Publication Type: Journal Article ISSN: 0254-8860 Subjects--Topical Terms: Bilirubin--analysisCalcium--analysisCholelithiasis--analysisCholesterol--analysisHumansSodium--analysisTrace Elements--analysis