Leflunomide–hydroxychloroquine combination therapy in patients with primary Sjögren's syndrome (RepurpSS-I): a placebo-controlled, double-blinded, randomised clinical trial

Eefje Hanna Martine van der Heijden, Sofie Liny Marie Blokland, Maarten R. Hillen, Ana P. Lopes, Fréderique M van Vliet-Moret, Antoine J.W.P. Rosenberg, Nard G. Janssen, Paco Mattheus Jacobus Welsing, Valentina Iannizzotto, Weiyang Tao, Aridaman Pandit, Francesca Barone, Aike A. Kruize, Timothy Ruben Dirk Jan Radstake, Joël A. G. van Roon