1. The Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins Medical Institutions, Baltimore, Maryland (R.C., R.S.B., M.J.B.)
2. Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, and The Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins Medical Institutions, Baltimore, Maryland (K.N.)