Cytomegalovirus infection and Henoch-Schönlein purpura in the elderly as a complication and disease perpetuating factor. Case report Esteban Vanegas Duarte;

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;

Cutaneous polyarteritis nodosa: An atypical simulator. Report of 3 cases and a narrative review of the literature Juliana Ordoñez-Parra; Alejandro Castellanos-Angarita; María Alejandra Casas-Barrera; Julián Rondón-Carvajal; Isabel Cristina Cuéllar-Ríos;