1 Department of Anesthesiology, Perioperative and Pain Medicine, Stanford School of Medicine, Stanford, CA, USA; Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria. Electronic address: cortner@stanford.edu.
2 Department of Anesthesiology, Perioperative and Pain Medicine, Stanford School of Medicine, Stanford, CA, USA.
3 Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, University of Toronto, Canada.
4 Department of Anesthesiology, Duke University, Durham, NC, USA.
5 Department of Anaesthesia and Perioperative Medicine, University of Cape Town, Cape Town, Western Cape, South Africa.