title: Severe atlantoaxial subluxation in early ankylosing spondylitis.
authors.affiliation: Division of Allergy, Immunology & Rheumatology, Department of Medicine, Taipei Veterans General Hospital and National Yang-Ming University School of Medicine, Taipei, Taiwan.
authors.forename: Wei-Sheng
authors.initials: WS
authors.lastname: Chen
authors.forename: Hui-Ting
authors.initials: HT
authors.lastname: Lee
authors.forename: Chang-Youh
authors.initials: CY
authors.lastname: Tsai
authors.forename: Chung-Tei
authors.initials: CT
authors.lastname: Chou