[1] Yale Univ, Sch Publ Hlth, Dept Hlth Policy & Management, New Haven, CT 06520 USA
[2] Yale Univ, Sch Med, Robert Wood Johnson Clin Scholars Program, Dept Med, New Haven, CT 06520 USA
[3] Univ Calif San Francisco, Div Hosp Med, San Francisco, CA 94143 USA
[4] Yale Univ, Sch Med, Dept Med, Sect Cardiovasc Med, New Haven, CT 06520 USA
[5] Yale New Haven Hosp, Ctr Outcomes Res & Evaluat, New Haven, CT 06504 USA