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ERAP1 genetic variations associated with HLA-B27 interaction and disease severity of syndesmophytes formation in Taiwanese ankylosing spondylitis

Chin-Man Wang, Huei-Huang Ho, Su-Wei Chang, Yeong-Jian Jan Wu, Jing-Chi Lin, Pi-Yueh Chang, Jianming Wu and Ji-Yih Chen*

Arthritis Research & Therapy 2012, 14:R125  doi:10.1186/ar3855