RT Journal Article SR Electronic T1 Interpreting the Spine Patient Outcomes Research Trial JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 577 OP 583 VO 74 IS 8 A1 Mazanec, Daniel A1 Okereke, Linda YR 2007 UL http://www.ccjm.org/content/74/8/577.abstract AB 502 Bad Gateway The server returned an invalid or incomplete response.