RT Journal Article SR Electronic T1 Developing a Risk-scoring Model for Ankylosing Spondylitis Based on a Combination of HLA-B27, Single-nucleotide Polymorphism, and Copy Number Variant Markers JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 132 OP 132 DO 10.3899/jrheum.160347.C1 VO 44 IS 1 YR 2017 UL http://www.jrheum.org/content/44/1/132.abstract AB