1 Division of Thoracic and Upper Gastrointestinal Surgery, McGill Univeristy Health Centre, Montreal General Hospital, 1650 Cedar Ave, Rm L8-505, Montreal, Quebec, Canada.
2 Division of Thoracic and Upper Gastrointestinal Surgery, McGill Univeristy Health Centre, Montreal General Hospital, 1650 Cedar Ave, Rm L8-505, Montreal, Quebec, Canada. Electronic address: lorenzo.ferri@mcgill.ca.