1. Department of Anesthesiology (B.K., G.S., M.E.S., J.K.F.), Medical College of Wisconsin, Milwaukee.
2. Cardiovascular Center (B.K., G.S., M.E.S., J.K.F.), Medical College of Wisconsin, Milwaukee.
3. Department of Physiology (G.S., J.K.F.), Medical College of Wisconsin, Milwaukee.
4. Department of Surgery, Division of Adult Cardiothoracic Surgery (N.D.O.), Medical College of Wisconsin, Milwaukee.