PT - JOURNAL ARTICLE AU - Richard, Irene Hegeman TI - Apathy does not equal depression in Parkinson disease AID - 10.1212/01.wnl.0000231141.03382.92 DP - 2006 Jul 11 TA - Neurology PG - 10--11 VI - 67 IP - 1 4099 - http://n.neurology.org/content/67/1/10.short 4100 - http://n.neurology.org/content/67/1/10.full SO - Neurology2006 Jul 11; 67