(Q43475192)
Statements
Prevalence of COPD in five Colombian cities situated at low, medium, and high altitude (PREPOCOL study) (English)
Andrés Caballero
Claudia Jaramillo
Fabio Bolívar
Fernando Sanabria
Patricia Osorio
Carlos Orduz
Diana P Guevara
Darío Maldonado
20 October 2007