1 McMaster University, Firestone Institute for Respiratory Health, Hamilton, ON, Canada kolbm@mcmaster.ca.
2 Service de Physiologie-Explorations Fonctionnelles, Assistance Publique-Hôpitaux de Paris (AP-HP), APHP-CUP, Hôpital Cochin, Université de Paris, Paris, France.
3 Keenan Research Centre, Li Ka Shing Knowledge Institute, St Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada.
4 University of Toronto, Interdepartmental Division of Critical Care Medicine, Toronto, ON, Canada.