aDepartment of Internal Medicine, Mayo Clinic Rochester

bDepartment of Cardiovascular Medicine, Mayo Clinic Rochester, Rochester, Minnesota, USA

cDepartment of Anesthesiology and Pain Management, University Health Network, Women's College Hospital, University of Toronto, Toronto, ON, Canada

dInstitut national de la santé et de la recherche médicale (INSERM) UMR-S 942, Cardiovascular Markers in Stress Conditions (MASCOT), University of Paris Cité, France

Correspondence to Dr Sabri Soussi, Department of Anesthesiology and Pain Management, University Health Network (UHN), Toronto Western Hospital, 399 Bathurst St, Toronto, ON M5T 2S8, Canada. E-mail: [email protected], [email protected]