Spiro-ergometry in patients suffering from Bechterew's disease.
D000844:Ankylosis; D016552:Ergometry; D006801:Humans; D013147:Spirometry; D013166:Spondylitis; D013167:Spondylitis, Ankylosing / Q000502:physiology*
SPIROMETRY; SPONDYLITIS, ANKYLOSING/physiology