1. Nolan Family Center for Cardiovascular Health, Minneapolis Heart Institute , 920 East 28th Street, Minneapolis, MN 55407 , USA
2. Department of Medicine, Hospital Alemão Oswaldo Cruz , São Paulo , Brazil
3. Department of Medicine, Universitat Internacional de Catalunya , Barcelona , Spain
4. Department of Medicine, Federal University of Santa Maria , Santa Maria , Brazil
5. Department of Medicine, University Israelita de Ciências da Saúde Albert Einstein , São Paulo , Brazil
6. Department of Medicine, Petrópolis Medical School , Petrópolis , Brazil
7. Department of Medicine, Federal University of Paraná , Curitiba , Brazil
8. Department of Medicine, Federal University of Rio Grande do Norte , Natal , Brazil
9. Department of Internal Medicine, Central Montana Medical Center , Lewistown , USA
10. Division of Pulmonary and Critical Care Medicine, Massachusetts General Hospital , Boston , USA
11. Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston , USA
12. Department of Anesthesia and Critical Care, Johns Hopkins University Medicine , Baltimore , USA