RT Journal Article SR Electronic T1 Improved Lateral Cervical Spine Radiography through Halo Traction Device JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 282 OP 283 VO 2 IS 3 A1 Bank, William O. A1 Kerlan, Robert K. A1 Kesselring, Lawrence W. YR 1981 UL http://www.ajnr.org/content/2/3/282.abstract AB