Multimorbidity phenotypes in ankylosing spondylitis and their association with disease activity and functional impairment: Data from the prospective study of outcomes in ankylosing spondylitis cohort
Paras Karmacharya,Cynthia S. Crowson,Ryan J. Lennon,Dilli Ram Poudel,John M. Davis,Alexis Ogdie,Jean W. Liew,Michael M. Ward,Mariko Ishimori,Michael H. Weisman,Matthew Brown,Mohammad H. Rahbar,Mark C. Hwang,John D. Reveille,Lianne S. Gensler