title: The concept of depression: diagnosis and classification.
mesh_terms: D003866:Depressive Disorder / Q000145:classification / Q000175:diagnosis* / Q000266:history; D005602:France; D005858:Germany; D006115:Greece; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D012384:Rome; D013577:Syndrome