Acute Paraplegia:A Presenting Manifestation of Aortic DissectionAm J Med 84:765-770, Zull,D.N.&Cydulka,R., 1988
Atlanto-Axial Subluxation in Rheumatoid ArthritisBone & Joint Surg 55B:458973., Rana,N.S., 1973