RT Journal Article SR Electronic T1 HLA-B*40:01 Is Associated with Ankylosing Spondylitis in HLA-B27–positive Populations JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1255 OP 1256 DO 10.3899/jrheum.151096 VO 43 IS 6 A1 ROBERTO DÍAZ-PEÑA A1 JOSE RAMÓN VIDAL-CASTIÑEIRA A1 ANTONIO LÓPEZ-VÁZQUEZ A1 CARLOS LÓPEZ-LARREA YR 2016 UL http://www.jrheum.org/content/43/6/1255.1.abstract AB