1Wanders A, Landewe R, Dougados M, et al. Association between radiographic damage of the spine and spinal mobility for individual patients with ankylosing spondylitis: can assessment of spinal mobility be a proxy for radiographic evaluation? [J]. Ann Rheum Dis, 2005, 64(7): 988-994.
2Van Denderen JC, Van derPaardt M, Nurmohamed MT, et al. Double blind, randomized placebo con- trolled study of leflunomide in the treatment of active ankylosing spondylitis[J]. Ann Rheum Dis, 2005, 64 (12): 1761-1764.
3Mohamed Montacer Kchir, Mohamed Mehdi Ghan- nouchi, Wafa Hamdi, et al. Impact of the ankylosing spondylitis on the professional activity[J]. Joint Bone Spine, 2009, 76(4): 378-382.
4Mohamed Younes, Anis Jailed, Zohra Aydi, et al. Socioeconomic impact of ankylosing spondylitis in Tunisia[J]. Joint Bone Spine , 2010, 77(1): 41-46.