Brian T Bateman1, Richard Smiley. 1. From the *Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts; †Department of Anesthesiology, Critical Care, and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; and ‡Department of Anesthesiology, Columbia University College of Physicians and Surgeons, New York.