Authors: H J Williams; J R Ward; S L Dahl; D O Clegg; R F Willkens; T Oglesby; M H Weisman; S Schlegel; R M Michaels; M E Luggen Journal: Arthritis Rheum Date: 1988-06
Authors: D L Scott; P T Dawes; E Tunn; P D Fowler; M F Shadforth; J Fisher; S Clarke; M Collins; P Jones; A J Popert Journal: Br J Rheumatol Date: 1989-04