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Nightline 2/21/199 Part 2: Circadian Sleep Disorders

Nightline with Ted Koppel broadcast 2/21/1996. Program on light, circadian rhythms and circadian sleep disorders including Non-24 hour sleep-wake cycle disorder. Includes interviews with Dr Thomas Wehr of NIH, Dr Charles Czeisler, Dr Ted Baker, and a person with N24 disorder.

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