RT Journal Article SR Electronic T1 Human lymphocyte antigens as a possible diagnostic aid in ankylosing spondylitis. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 387 DO 10.1136/jcp.26.5.387-a VO 26 IS 5 A1 M Caffrey A1 D A Brewerton A1 F D Hart A1 D C James YR 1973 UL http://jcp.bmj.com/content/26/5/387.1.abstract AB