1. Odontoid pannus formation in a patient with ankylosing spondylitis causing atlanto-axial instability;Rajak;BMJ Case Rep,2012
2. Associated risk factors with worse functional prognosis and hip replacement surgery in ankylosing spondylitis;Hamdi;Joint Bone Spine,2012
3. Craniocervical junction involvement in ankylosing spondylitis;Slobodin;Eur Spine J,2015
4. A new approach to defining functional ability in ankylosing spondylitis: the development of the Bath Ankylosing Spondylitis Functional Index;Calin;J Rheumatol,1994
5. Patient and physician agreement on reported Bath Ankylosing Spondylitis Disease Activity Index in patients with axial spondyloarthritis;Ghukasyan;Joint Bone Spine,2016