From the Department of Anesthesia, University of Toronto and Malignant Hyperthermia Investigation Unit, Toronto General Hospital, Toronto, Ontario, Canada (C.A.I.M., S.H., N.K., S.R.) Department of Anesthesia and Critical Care, University of Würzburg, Würzburg, Germany (F.S., S.J.) Department of Anaesthesiology and Intensive Care, Leipzig University Hospital, Leipzig, Germany (H.R.) Helios Klinik Schkeuditz, Schkeuditz, Germany (H.R.) Academic Hospital Sigmaringen, Sigmaringen, Germany (W.K.) Experimental Anaesthesiology, Ulm University, Ulm, Germany (W.K.) Department of Anaesthesiology, Antwerp University Hospital, Edegem, Belgium (L.H.) MH Research Unit, University of Antwerp, Wilrijk, Belgium (L.H.).