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2. Pleuropulmonary manifestations of ankylosing spondylitis;Rosenow;Mayo Clin. Proc.,1977
3. Ankylosing spondylitis lung disease—an underdiagnosed entity?;Hillerdal;Eur. J. Respir. Dis.,1983
4. Ankylosing spondylitis and lung fibrosis;Davies;Q. J. Med.,1972
5. The chest radiograph in AS;Chakera;Clin. Radiol.,1975