Asthma-COPD overlap syndrome (ACOS) in primary care of four Latin America countries: The PUMA study

Maria Montes de Oca, MD
Maria Victorina Lopez Varela, MD
Maria Laucho-Contrera, MD
Alejandro Casas, MD
Eduardo Schiavi, Respiratoria María Fer
Juan Carlos Mora, MD

BMC Pulmonary Medicine, 2017