1. Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Toronto, Ontario, Canada
2. Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
3. Department of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
4. Pulmonary Hypertension Group of the Institute of Cardiology and Pulmonology, Laval University, Quebec City, Québec, Canada
5. Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom
6. Department of Thoracic Surgery, Medical University, Vienna, Austria; and
7. Department of Surgery, University of Toronto, Toronto, Ontario, Canada