Participating Institutions University of California, San Francisco L. Benet, C. Brett, E. Burchard, R. Castro, R. Edwards, T. Ferrin, K. Giacomini, C. Huang, Y. Huang, S. Johns, M. Kawamoto, P. Kwok, D. Kroetz, E. Lin, N. Risch, V. Reus, A. Sali, M. Segal, D. Stryke, J. Witte University of California, Berkeley J. Rine Stanford University R. Myer Kaiser Permanente of Northern California C. Schaefer Ohio State University W. Sadée