The Writing on the WallLancet 372:344, Wilder-Smith,E.P. &Ng,E.S., 2008
Spinal Cord Involvement by C4-C5 Vertebral Subluxation in Rheumatoid Arthritis:A Description of Two Cases Examined at NecropsyAnn Neurol 1:575, Hughes,J.T., 1977