1. Department of Internal Medicine, Section of Cardiovascular Medicine (S.W.R., R.L.M.), Yale-New Haven Hospital, New Haven, CT.
2. Department of Anesthesiology (W.M.P., H.T.), Yale-New Haven Hospital, New Haven, CT.
3. Yale School of Medicine (W.M.P., H.T.), Yale-New Haven Hospital, New Haven, CT.
4. Department of Radiology and Diagnostic Imaging (I.C.), Yale-New Haven Hospital, New Haven, CT.