[1] Yale Sch Med, Dept Internal Med, Sect Cardiovasc Med, New Haven, CT USA
[2] Yale Sch Med, Dept Internal Med, Robert Wood Johnson Fdn Clin Scholars Program, New Haven, CT USA
[3] Yale Sch Publ Hlth, Dept Hlth Policy & Management, New Haven, CT USA
[4] Yale New Haven Med Ctr, Ctr Outcomes Res & Evaluat, 20 York St, New Haven, CT 06504 USA