Published in:

01-03-2003 | Original Article

Age at disease onset and diagnosis delay in HLA-B27 negative vs. positive patients with ankylosing spondylitis

Authors: Ernst Feldtkeller, Muhammad Khan, Désirée van der Heijde, Sjef van der Linden, Jürgen Braun

Published in: Rheumatology International | Issue 2/2003