Low serum calprotectin levels correlate with the presence of biological drugs after the first year of treatment in patients with rheumatoid arthritis. (3rd October 2019) - Martínez-Feito, Ana; Plasencia-Rodríguez, Chamaida; Navarro-Compán, Victoria; Jochems, Andrea; Hernández-Breijo, Borja; Peiteado, Diana; Tornero, Carolina; Pascual-Salcedo, Dora; Balsa, Alejandro