Hypocretin (orexin) deficiency in narcolepsy and primary hypersomnia
I O Ebrahim, M K Sharief, S de Lacy, Y K Semra, R S Howard, M D Kopelman, A J Williams
Journal of Neurology, Neurosurgery & Psychiatry Jan 2003, 74 (1) 127-130; DOI: 10.1136/jnnp.74.1.127