7Scott H.Principles and practice of chiropractic[M].3rd Edition.New York:McGraw-Hill,2005:25-26.
8Mirtz TA,Morgan L,Wyatt LH,et al.An epidemiological examina-tion of the subluxation construct using Hill’s criteria of causation[EB/OL].[2009-12-02].http://www.chiroandosteo.com/con-tent/17/1/13.
9Henderson CN,Gramer GD,Zhang Q,et al.Introducing the external link model for studying spine fixation and misalignment:part2,Biomechanical features[J].J Manipulative Physiol Ther,2007,30(4):279-294.
10Gatterman MI.Foundations of chiropractic subluxation[M].2nd Edition.Philadelphia:Elsevier's Health Sciences Rights Depart-ment,2005:50-51.