Hypocretin-1 (Orexin-A) levels in human lumbar CSF in different age groups: Infants to elderly persons. - Kanbayashi,T.; Yano,T.; Ishiguro,H.; Kawanishi,K.; Chiba,S.; Aizawa,R.; Sawaishi,Y.; Hirota,K.; Nishino,S.; Shimizu,T. (Sleep, 2002)