title: Letter: Serum parameters in hard and soft water communities.
mesh_terms: D001774:Blood Chemical Analysis; D002118:Calcium / Q000097:blood; D002857:Chromium / Q000097:blood; D003035:Cobalt / Q000097:blood; D003300:Copper / Q000097:blood; D003327:Coronary Disease / Q000209:etiology; D005260:Female; D006801:Humans; D008274:Magnesium / Q000097:blood; D008297:Male; D006113:United Kingdom; D014881:Water Supply; D015032:Zinc / Q000097:blood
chemical_list: D002857:Chromium; D003035:Cobalt; D003300:Copper; D008274:Magnesium; D015032:Zinc; D002118:Calcium