title: The nosology of depression: the endogenous-reactive concept.
mesh_terms: D000275:Adjustment Disorders; D001714:Bipolar Disorder / Q000145:classification; D003863:Depression / Q000145:classification* / Q000209:etiology / Q000628:therapy; D004565:Electroconvulsive Therapy; D005163:Factor Analysis, Statistical; D006801:Humans; D011613:Psychotherapy; D012660:Semantics