title: An international study on gallstone composition.
mesh_terms: D002119:Calcium Carbonate / Q000032:analysis*; D002130:Calcium Phosphates / Q000032:analysis*; D002769:Cholelithiasis; D002784:Cholesterol / Q000032:analysis*; D006801:Humans; D010169:Palmitic Acids / Q000032:analysis*; D012965:Sodium Chloride / Q000032:analysis*
chemical_list: D002130:Calcium Phosphates; D010169:Palmitic Acids; D012965:Sodium Chloride; D002784:Cholesterol; D002119:Calcium Carbonate