1. Division of Thoracic Surgery, Faculdade de Medicina FMUSP, Universidade de Sao Paulo , Sao Paulo, Brazil
2. Division of Thoracic Surgery, Centre Hospitalier Affilié Universitaire Régional—Université de Montréal , Trois-Rivières, QC, Canada
3. Division of Thoracic Surgery, Brigham and Women’s Hospital, Harvard Medical School , Boston, MA, USA