From The North American Malignant Hyperthermia Registry of the Malignant Hyperthermia Association of the United States, University of Pittsburgh Medical Center, Mercy Hospital, Pittsburgh, Pennsylvania (2000 through 2017; M.G.L., B.W.B.)Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida (2018; M.G.L.)Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, Michigan (T.T.K., M.T.V., S.K.)Department of Nurse Anesthesia, University of Pittsburgh, Pittsburgh, Pennsylvania (2016 through 2018; B.W.B.)Department of Anesthesiology, School of Medicine (K.G.B., T.W.K., J.C.)School of Public Health (K.G.B.), University of Minnesota, Minneapolis, MinnesotaDepartment of Anesthesiology, Children’s Hospital of Pittsburgh (E.L.S.)Department of Anesthesiology (A.H.), University of Pittsburgh Medical Center, Pittsburgh, PennsylvaniaDepartment of Anesthesiology, Weill Cornell Medical College and New York−Presbyterian Hospital, New York, New York (J.L.)Department of Anesthesia and Pain Management, University Health Network, University of Toronto, Toronto, Canada (S.R.)Department of Anesthesiology and Pediatrics, Emory University School of Medicine, and Children’s Healthcare of Atlanta, Egleston Hospital, Atlanta, Georgia (D.M.). Current positions: Dr. Larach is now at the Department of Anesthesiology, University of Florida, Gainesville, Florida. Dr. Sivak is now at the Department of Anesthesiology and Pain Medicine, Nationwide Children’s Hospital and The Ohio State University, Columbus, Ohio.Department of Anesthesiology, Academic Medical Center, Amsterdam, The NetherlandsBeaumont Health, Dearborn, MichiganBeaumont Health, Royal Oak, MichiganBeaumont Health, Farmington Hills, MichiganBeaumont Health, Grosse Pointe, MichiganBronson Healthcare, Battle Creek, MichiganBronson Healthcare, Kalamazoo, MichiganCHOC Children’s Hospital, Orange, CaliforniaAnesthesiology Institute, Cleveland Clinic, Cleveland, OhioDepartment of Anesthesiology, Columbia University Medical Center, New York, New YorkHenry Ford Health System, Detroit, MichiganHenry Ford Health System, West Bloomfield, MichiganHolland Hospital, Holland, MichiganMercy Health, Muskegon, MichiganDepartment of Anesthesiology and Critical Care Medicine, Memorial Sloan Kettering Cancer Center, New York, New YorkDepartment of Anesthesiology, Perioperative Care, and Pain Medicine, New York University Langone Medical Center, New York, New YorkDepartment of Anesthesiology & Perioperative Medicine, Oregon Health & Science University, Portland, OregonSt. Joseph Mercy, Ann Arbor, MichiganSt. Joseph Mercy Oakland, Pontiac, MichiganSt. Mary Mercy Hospital, Livonia, MichiganSparrow Health System, Lansing, MichiganDepartment of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CaliforniaDepartment of Anesthesiology, University Medical Center Utrecht, Utrecht, The NetherlandsDepartment of Anesthesiology, University of Colorado, Aurora, ColoradoDepartment of Anesthesiology, University of Oklahoma Health Sciences Center, Oklahoma City, OklahomaDepartment of Anesthesiology, University of Pennsylvania, Philadelphia, PennsylvaniaDepartment of Anesthesiology, University of Tennessee Medical Center, Knoxville, TennesseeDepartment of Anesthesiology, University of Utah, Salt Lake City, UtahDepartment of Anesthesiology, University of Vermont, Larner College of Medicine, Burlington, VermontDepartment of Anesthesiology, University of Virginia, Charlottesville, VirginiaDepartment of Anesthesiology and Pain Medicine, University of Washington, Seattle, WashingtonDepartment of Anesthesiology, Vanderbilt University Medical Center, Nashville, TennesseeDepartment of Anesthesiology, Wake Forest Baptist Health, Winston-Salem, North CarolinaDepartment of Anesthesiology, Washington University School of Medicine, St. Louis, MissouriDepartment of Anesthesiology, Weill Cornell Medical College, New York, New YorkDepartment of Anesthesiology, Yale School of Medicine, New Haven, Connecticut