Costs of acute otitis media in children in a city of the Colombian Caribbean coast

by Wilfrido Coronell-Rodríguez, Cindy Arteta-Acosta, Nelson Alvis-Zakzuk, Nelson Alvis-Guzmán
Published 2019-03-01

Costos del conflicto armado en Colombia: Una revisión sistemática

by Nelson Alvis-Zakzuk, Diana Díaz-Jiménez, Liliana Castillo-Rodríguez, Juan Varela-Valero, Nelson Alvis-Guzman, Carlos Castañeda-Orjuela
Published 2018-07-01