We may receive a commission on purchases made from links. DVD players first entered the scene in 1996 in Japan. The capacity of the original DVD (Digital Video Disc), single-sided, single-layer DVD-1, ...
Type 2 narcolepsy features excessive daytime sleepiness (EDS) without cataplexy — the sudden loss of muscle tone triggered by emotions that defines type 1. Symptoms are generally milder than type 1.
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