1. Division of Cardiology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
2. Division of Pulmonary and Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA
3. Division of Critical Care, University of Alberta, Edmonton, Alberta, Canada
4. Division of Cardiology, University of Alberta, Edmonton, Alberta, Canada
5. Division of Cardiology, Montreal Heart Institute, Montreal, Québec, Canada
6. Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
7. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA