1. * Consultant, Department of Anesthesiology, Mayo Clinic and Mayo Foundation; Associate Professor of Anesthesiology, Mayo Medical School.† Resident in Anesthesiology, Mayo Graduate School of Medicine (University of Minnesota).† Consultant, Department of Anesthesiology, Mayo Clinic and Mayo Foundation; Instructor in Anesthesiology, Mayo Medical School.§ Consultant, Department of Anesthesiology, May