Similar incidence of coronavirus disease 2019 (COVID-19) in patients with rheumatic diseases with and without hydroxychloroquine therapy. oleh Juan Macías, Paz González-Moreno, Esther Sánchez-García, Ramón Morillo-Verdugo, José J Pérez-Venegas, Ana Pinilla, MªMar Macho, MªVictoria Martínez, Alejandro González-Serna, Anaïs Corma, Luis M Real, Juan A Pineda