title: Ultradian, circadian, and stress-related hypothalamic-pituitary-adrenal axis activity--a dynamic digital-to-analog modulation.
authors.forename: G P
authors.initials: GP
authors.lastname: Chrousos
mesh_terms: D000204:Activity Cycles / Q000502:physiology*; D002940:Circadian Rhythm / Q000502:physiology*; D006801:Humans; D007030:Hypothalamo-Hypophyseal System / Q000503:physiopathology*; D010913:Pituitary-Adrenal System / Q000503:physiopathology*; D013312:Stress, Physiological / Q000503:physiopathology*