title: Body water, electrolytes and psychological test performance in elderly patients.
mesh_terms: D000368:Aged; D001834:Body Water / Q000378:metabolism*; D003071:Cognition; D003704:Dementia / Q000378:metabolism*; D003863:Depression / Q000378:metabolism*; D005110:Extracellular Space; D005163:Factor Analysis, Statistical; D006801:Humans; D011188:Potassium / Q000378:metabolism*; D011581:Psychological Tests; D012964:Sodium / Q000378:metabolism*
chemical_list: D012964:Sodium; D011188:Potassium