title: The heterogeneity of depression: an old debate renewed.
authors.affiliation: Mood Disorders Program, Tufts Medical Center, Boston, MA, USA. nghaemi@tuftsmedicalcenter.org
authors.forename: S Nassir
authors.initials: SN
authors.lastname: Ghaemi
authors.forename: Paul A
authors.initials: PA
authors.lastname: Vöhringer
mesh_terms: D003210:Concept Formation; D003866:Depressive Disorder / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D006801:Humans; D010818:Practice Patterns, Physicians'