?url_ver=Z39.88-2004&rft_id=10.1002%2Fart.24933&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Stuart&rft.aulast=Davidson&rft.au=Davidson%2C+Stuart&rft.issn=0004-3591&rft.title=Arthritis+and+Rheumatism&rft.date=2009&rft.issue=11&rft.volume=60&rft.atitle=Association+of+ERAP1%2C+but+not+IL23R%2C+with+ankylosing+spondylitis+in+a+Han+Chinese+population&rft.genre=article