SARS and biosecurity in Colombia

by Leonardo Briceño Ayala
Published 2004-06-01

Access, Security and Integrity in the Care Registration of Pregnant Women in Colombia, 2007 to 2009

by Leonardo Briceño Ayala, Ángela María Pinzón Rondón, Carol Jisseth Zárate Ardila
Published 2015-09-01

Trabajo infantil ambulante en las capitales latinoamericanas Street child work in Latin American capitals

by Angela Ma. Pinzón-Rondón, Leonardo Briceño-Ayala, Juan Carlos Botero, Patricia Cabrera, María Nelcy Rodríguez
Published 2006-10-01

Underground Coal Mining: Relationship between Coal Dust Levels and Pneumoconiosis, in Two Regions of Colombia, 2014

by Carlos Humberto Torres Rey, Milciades Ibañez Pinilla, Leonardo Briceño Ayala, Diana Milena Checa Guerrero, Gloria Morgan Torres, Helena Groot de Restrepo, Marcela Varona Uribe
Published 2015-01-01