Affiliation: | 1. Pulmonary Department, Hospital Universitario Pedro Ernesto, State University of Rio de Janeiro, Avenida Vinte e oito de Setembro, 77, Segundo andar, Vila Isabel, Rio de Janeiro, Rio de Janeiro 20551-30, Brazil;2. Pulmonary-Critical Care Medicine Division, Baystate Medical Center, 759 Chestnut Street, Springfield, MA 01199, USA |