title: Cigarette use and hyponatremia in schizophrenic patients.
mesh_terms: D006801:Humans; D007010:Hyponatremia / Q000209:etiology*; D012107:Research Design / Q000592:standards; D012559:Schizophrenia / Q000150:complications; D012565:Schizophrenic Psychology; D012907:Smoking / Q000009:adverse effects* / Q000523:psychology; D014869:Water Intoxication / Q000209:etiology*