1. Stanford Cardiovascular Institute (C.K.L., J.C.W.), Stanford University School of Medicine, CA.
2. Department of Medicine, Division of Cardiovascular Medicine (C.K.L., J.C.W.), Stanford University School of Medicine, CA.
3. Department of Biological Sciences, University of Delaware, Newark (C.K.L.).
4. Department of Radiology (J.C.W.), Stanford University School of Medicine, CA.