1. Altin R, Özdolap S, Savranlar A (2005) Comparison of early and late pleuropulmonary findings of ankylosing spondylitis by high resolution computed tomography and effects on patients‘ daily life. Clin Rheumatol 24: 22–28
2. Arnett FC (1997) Ankylosing spondylitis. In: McCarty DJ, Koopman WJ (eds) Arthritis and allied conditions. A textbook of rheumatology, 13th edn. Williams & Wilkins, Baltimore, pp 1197–1208
3. Black LF, Hyatt RE (1969) Maximal respiratory pressures: normal values and relationship to age and sex. Am Rev Respir Dis 99: 696–702
4. Calin A, Garrett S, Whitelock HI (1994) A new approach to defining functional ability in anklosing spondylitis: the development of the Bath Ankylosing Spondylitis Functional Index. J Rheumatol 21: 2281–2285
5. Carter R, Riantawan P, Banham SW (1999) An investigating of factors limiting aerobic capacity in patients with ankylosing spondylitis. Respir Med 93: 700–708