A systematic comparison between rheumatoid arthritis and ankylosing spondylitis: an introduction

J. Braun, J. Sieper and T. Pincus

Please address correspondence to: Theodore Pincus, MD, Division of Rheumatology, NYU Hospital for Joint Diseases, 301 East 17th Street, Room 1608, New York, NY 10003, USA.

E-mail: tedpincus@gmail.com

Clin Exp Rheumatol 2009; 27 (Suppl. 55): S-1-S-2