title: Letter: Magnesium deficiency and hypocalcaemia.
mesh_terms: D001842:Bone and Bones / Q000378:metabolism; D002118:Calcium / Q000097:blood / Q000378:metabolism; D006801:Humans; D006996:Hypocalcemia / Q000188:drug therapy / Q000209:etiology*; D008274:Magnesium / Q000627:therapeutic use; D008275:Magnesium Deficiency / Q000150:complications*; D008297:Male; D008875:Middle Aged
chemical_list: D008274:Magnesium; D002118:Calcium