title: Simultaneous determination of gallstone structure and composition by using an electron probe X-ray microanalyser.
mesh_terms: D002118:Calcium / Q000032:analysis; D002769:Cholelithiasis / Q000378:metabolism*; D004577:Electron Probe Microanalysis; D006801:Humans; D008855:Microscopy, Electron, Scanning; D013455:Sulfur / Q000032:analysis
chemical_list: D013455:Sulfur; D002118:Calcium