Tofacitinib as monotherapy following methotrexate withdrawal in patients with psoriatic arthritis previously treated with open-label tofacitinib plus methotrexate: a randomised, pl... by Nash, P, Mease, PJ, Fleishaker, D, Wu, J, Coates, LC, Behrens, F, Gladman, DD, Kivitz, AJ, Wei, JC, Shirinsky, I, Menon, S, Romero, AB, Fallon, L, Hsu, MA, Wang, C, Kanik, KS

Safety and efficacy of Tofacitnib in patients with active psoriatic arthritis: Interim analysis of OPAL balance, an open-label, long-term extension study by Nash, P, Coates, LC, Kivitz, AJ, Mease, PJ, Gladman, DD, Covarrubias-Cobos, JA, FitzGerald, O, Fleishaker, D, Wang, C, Wu, J, Hsu, M-A, Menon, S, Fallon, L, Romero, AB, Kanik, KS