Seasons, ulcers and depressions.
D001714:Bipolar Disorder; D003863:Depression; D006801:Humans; D001523:Mental Disorders; D010437:Peptic Ulcer / Q000209:etiology*; D010507:Periodicity; D012621:Seasons; D014456:Ulcer
PEPTIC ULCER/etiology and pathogenesis; PERIODICITY; PSYCHOSES, MANIC-DEPRESSIVE/manifestations