title: Urolithiasis--a study of drinking water hardness and genetic factors.
mesh_terms: D000328:Adult; D000368:Aged; D005190:Family; D005260:Female; D006244:Hardness; D006801:Humans; D007669:Kidney Calculi / Q000453:epidemiology / Q000209:etiology* / Q000235:genetics; D008297:Male; D008875:Middle Aged; D009523:Newfoundland and Labrador; D011897:Random Allocation; D012494:Sampling Studies; D012737:Sex Factors; D014881:Water Supply / Q000032:analysis*