title: Ultradian rhythms in urine flow in waking humans.
mesh_terms: D000293:Adolescent; D000328:Adult; D006801:Humans; D008297:Male; D009318:Natriuresis; D010507:Periodicity; D011188:Potassium / Q000652:urine; D014556:Urine; D014882:Water-Electrolyte Balance
chemical_list: D011188:Potassium