Drug flashbacks: reported frequency in a military population.
D000328:Adult; D000661:Amphetamine; D001722:Birth Order; D002188:Cannabis; D006212:Hallucinations; D006801:Humans; D008238:Lysergic Acid Diethylamide; D008297:Male; D008890:Military Psychiatry; D009892:Opium; D012008:Recurrence; D013315:Stress, Psychological; D019966:Substance-Related Disorders; D011795:Surveys and Questionnaires; D014481:United States; D014744:Vietnam; D014857:Warfare
D009892:Opium; D008238:Lysergic Acid Diethylamide; D000661:Amphetamine