RT Journal Article SR Electronic T1 Response to: ‘Impact of gender on outcomes in ankylosing spondylitis’ by Feldtkeller et al JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP e3 OP e3 DO 10.1136/annrheumdis-2013-204333 VO 73 IS 1 A1 Irene van der Horst-Bruinsma A1 Debra Zack A1 Annette Szumski A1 Andrew S Koenig YR 2014 UL http://ard.bmj.com/content/73/1/e3.abstract AB