1. Yale School of Medicine, New Haven, CT (P.L.).
2. Project Access-New Haven, New Haven, CT (K.A., D.V., L.K., D.C.-L.).
3. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT (E.S.S.).
4. Center for Outcomes Research and Evaluation, Yale-New Haven Hospital, CT (E.S.S.).