1. Department of Anesthesiology; David Geffen School of Medicine at UCLA; Los Angeles; CA
2. Department of Cardiology; David Geffen School of Medicine at UCLA; Los Angeles; CA
3. Department of Anesthesiology; University of Pittsburgh Medical Center Presbyterian; Pittsburgh; PA
4. Department of Anesthesiology and Perioperative Care; Vanderbilt University Medical Center; Nashville; TN
5. Department of Anesthesiology; Mayo Clinic College of Medicine; Rochester; MN
6. Department of Anesthesiology; Columbia University; Columbia; NY
7. Department of General Anesthesiology; Cleveland Clinic; Cleveland; OH
8. Department of Biomathematics; David Geffen School of Medicine at UCLA; Los Angeles; CA
9. Department of Surgery; University of Pittsburgh Medical Center Presbyterian; Pittsburgh; PA
10. Department of Surgery; University of California; San Francisco; CA
11. Department of Surgery; David Geffen School of Medicine at UCLA; Los Angeles; CA