1. Departments of Medicine (J.J., G.K.S., H.K., G.R.B., R.B.P.), University of California, San Diego, La Jolla, California 92093–0652
2. Bioengineering (E.C., R.S.S.), University of California, San Diego, La Jolla, California 92093–0652
3. Mathematics (M.L.), University of California, San Diego, La Jolla, California 92093–0652
4. Family and Preventive Medicine (F.V.), University of California, San Diego, La Jolla, California 92093–0652