Textbook Reference: Sleep Disorders Can Be Serious, Even Life-Threatening, pg. 312
Courtesy of Dr. Emmanuel Mignot and the Stanford University Center for Narcolepsy. For more information, see L. Lin et al., 1999. The sleep disorder canine narcolepsy is caused by a mutation in the hypocretin (orexin) receptor 2 gene. Cell 98(3):365–376.