Clinical Characteristics And Biological Treatment In 66 Patients With Rheumatoid Arthritis: An Observational. Study In The Southernmost Part Of Chile - Maravi Torrealva, Zosimo; Mansilla Aravena, Bellanides; Burgos Canete, Paula; Palacios Bautista, Mariana; Montana Alvarado, Natalia; Montiel Varas, Andrea; Neira Castillo, Femanda; Ojeda Galindo, Camila (My University, 2020)