تماشای ویدئو Hallucinogen Persisting Perception Disorder HPPD از آی-ویدئو
Information on Hallucinogen Persisting Perception Disorder (HPPD). Krystle Cole discusses interviews with Dr. Halpern and Dr. Abraham.
More info on HPPD: http://www.neurosoup.com/hppd_main_page.htm