1 MA Pedrossian Hospital, Laboratory of Respiratory Pathophysiology (LAFIR), Campo Grande, MS, Brazil.
2 Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany.
3 Pulmonary Function Laboratory and Respiratory Investigation Unit, Division of Respirology, Kingston Health Science Center & Queen's University, Kingston ON, Canada.
4 Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid-Medical School, Madrid, Spain.
5 MA Pedrossian Hospital, Laboratory of Respiratory Pathophysiology (LAFIR), Campo Grande, MS, Brazil. Electronic address: paulo.muller@ufms.br.