1 CRONSTEDT, Hedvig 303.863 SWEDISH The Swedish version of the Bath ankylosing spondylitis functional index. Reliability and validity / Hedvig Cronstedt, Annika Waldner, Christina H. Stenstrom. The Swedish version of the Bath ankylosing spondylitis disease activity index. Reliability and validity / Annika Waldner, Hedvig Cronstedt, Christina H. Stenstrom - Oslo [etc.] : Scandinavian University Press, 1999. - 16 s. ; 28 cm. - (Scandinavian Journal of )