1. Unexplained chest pain in patients with normal coronary arteriograms: a follow up study of functional status;Ockene, I.S.; Shay, M.J.; Weiner, B.H.; Dalen, J.E.;N Engl J Med,1980
2. Striking prevalence of ankylosing spondylitis in 'healthy' W27 positive males and females: a controlled study;Calin, A.; Fries, J.F.;N Engl J Med,1975
3. The oesophagus as a cause of recurrent chest pain: which patients should be investigated and which tests should be used;De Caestecker, J.S.; Blackwell, J.N.; Brown, J.; Heading, R.C.;Lancet 1985
4. Chest pain in patients with normal coronary arteriograms;Brandon, S.;Br Med J,1983
5. Thorax in ankylosing spondylitis;Dudley Hart, F.; Emerson, P.A.; Gregg, I.;Ann Rheum Dis