Focal sialadenitis in patients with ankylosing spondylitis and spondyloarthropathy: a comparison with patients with rheumatoid arthritis or mixed connective tissue disease
L M J Helenius, J H Hietanen, I Helenius, H Kautiainen, H Piirainen, L Paimela, M Lappalainen, R Suuronen, C Lindqvist, M Leirisalo-Repo
Annals of the Rheumatic Diseases Aug 2001, 60 (8) 744-749; DOI: 10.1136/ard.60.8.744