title: Composition of upper urinary tract calculi stratifying by X-ray diffraction in 31 cases.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D014514:Ureteral Calculi / Q000378:metabolism*; D014961:X-Ray Diffraction