Factors associated with development of end stage renal disease during hospitalization in patients with microscopic polyangiitis and granulomatosis with polyangiitis in a population of northwestern Colombia Santiago Cobaleda Cano; Andrés Felipe Echeverri García; Adriana Margarita Trejos Tenorio; Javier Darío Márquez Hernández; Jhon Edwar García Rueda; Luis Fernando Pinto Peñaranda;

Associated factors of antiphospholipid syndrome. When do we need antiphospholipid antibodies? Jaime Andrés Escobar Sáenz; Oscar Muñoz Velandia; Paula Ruiz Talero; Daniel Fernández Ávila;

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;