Sunit Ghosh is Clinical Director, Department of Anaesthesia and Critical Care, Papworth Hospital, Cambridge, UK.
Florian Falter is Consultant in Cardiothoracic Anaesthesia and Critical Care, Department of Anaesthesia and Critical Care, Papworth Hospital, Cambridge, UK.
David J. Cook is Professor, Department of Anesthesiology, College of Medicine, Mayo Clinic, Rochester, Minnesota, USA.