Sleep disorders: coping with a waking nightmare.
D000368:Aged; D000375:Aging; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis; D006801:Humans; D008875:Middle Aged; D009290:Narcolepsy / Q000175:diagnosis; D012890:Sleep / Q000502:physiology; D012891:Sleep Apnea Syndromes / Q000175:diagnosis; D007319:Sleep Initiation and Maintenance Disorders / Q000175:diagnosis / Q000188:drug therapy; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000188:drug therapy*