1 Section of Health Care Policy, Richard A. and Susan F. Smith Center for Outcomes Research, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.
2 Section of Health Care Policy, Richard A. and Susan F. Smith Center for Outcomes Research, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA; Department of Health Policy and Management, School of Public Health, Harvard University, Boston, Massachusetts, USA. Electronic address: rwadhera@bidmc.harvard.edu.