RT Journal Article SR Electronic T1 Spontaneous subluxation of the first and second cervical vertebrae, in rheumatoid arthritis, treated with spinal fusion JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 81 OP 86 VO 37 IS 2 A1 Samuel R. Sawmiller A1 Alan H. Wilde YR 1970 UL http://www.ccjm.org/content/37/2/81.abstract AB