title: Late onset spondyloarthropathy: comparison with early onset patients.
authors.forename: L J
authors.initials: LJ
authors.lastname: Kay
authors.forename: D J
authors.initials: DJ
authors.lastname: Walker
mesh_terms: D017668:Age of Onset; D000368:Aged; D015535:Arthritis, Psoriatic / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011565:Psoriasis / Q000150:complications; D013166:Spondylitis / Q000150:complications*