title: Mental depression in untreated Parkinson's disease of recent onset.
mesh_terms: D000275:Adjustment Disorders / Q000175:diagnosis; D003866:Depressive Disorder / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000175:diagnosis*; D011581:Psychological Tests