2Eisenberg D M, Kaptchuk T J.Acupuncture: theory, ecacy, and practice[J].Annals of Internal Medicine, 2002, 136 ( 5 ) : 374-383.
3Howell L L, Wilcox K M.Functional imaging and neurochemical correlates of stimulant self-administration in primates [J]. Psychopharmacology, 2002, 163 ( 8 ) : 352-361.