CSF hypocretin/orexin levels in narcolepsy and other neurological conditions. - Ripley,B.; Overeem,S.; Fujiki,N.; Nevsimalova,S.; Uchino,M.; Yesavage,J.; Di Monte,D.; Dohi,K.; Melberg,A.; Lammers,G.J.; Nishida,Y.; Roelandse,F.W.; et al. (Neurology, 2001)