1. Departamento Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
2. CardioREspirAtory Research Laboratory (CREAR), Departamento Ciencias de la Salud, Pontificia Universidad Católica de Chile, Santiago, Chile.
3. Toronto General Hospital Research Institute, Toronto, ON, Canada.
4. Department of Physiology, University of Toronto, Toronto, ON, Canada.
5. Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.
6. Division of Respirology, Department of Medicine, University Health Network, Toronto, ON, Canada.