High-Titer Rheumatoid Factor is Associated with Worse Clinical Outcomes and Higher Needs for Advanced Therapies in Rheumatoid Arthritis Under Real-Life Conditions by Victor Davi R. S. Oliveira, Ana Paula M. G. Reis, Claiton V. Brenol, Ivânio A. Pereira, Karina R. Bonfiglioli, Letícia R. Pereira, Manoel B. Bértolo, Maria de Fátima L. C. Sauma, Maria Fernanda B. R. Guimarães, Paulo Louzada-Júnior, Rina D. N. Giorgi, Sebastião C. Radominski, Licia Maria H. Mota, Cleandro P. Albuquerque, Geraldo R. Castelar-Pinheiro

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