1. Department of Anesthesiology, University of Minnesota Medical School, Minneapolis, Minnesota
2. Department of Anesthesiology, St Vincent’s Medical Center, Bridgeport, Connecticut,
3. Frank H. Netter MD School of Medicine, Quinnipiac University, Hamden, Connecticut
4. Department of Anesthesiology, St Vincent’s Medical Center, Bridgeport, Connecticut
5. Department of Anesthesiology, Children’s Minnesota Hospital, Minneapolis, Minnesota