Determination of the 99th percentile of anticardiolipin and anti-ß2 glycoprotein I antibodies in an institution in the city of Medellin, Colombia Gustavo Adolfo Castilla Agudelo; Libia María Rodríguez Padilla; Sergio Jaramillo Velásquez; Lady Johanna Hernández Zapata; Miguel Antonio Mesa Navas; María Fernanda Álvarez Barreneche; Carlos Jaime Velásquez Franco;

Capillaroscopic abnormalities in systemic lupus erythematosus and its association with clinical manifestation María Fernanda Álvarez Barreneche; Carlos Jaime Velásquez Franco; Carlos Esteban Giraldo Cuartas; Miguel Antonio Mesa Navas;

Macrophage activation syndrome as a result of rheumatological diseases: Report of 4 cases Lina María Saldarriaga Rivera; Nicolás Sánchez-Ramírez; Laura Rodríguez-Conde; Diana Paola Tejedor-Restrepo;