1. Brigham and Women’s Hospital, Division of Health Policy and Public Health, Department of Emergency Medicine, Harvard Medical School, Boston Massachusetts
2. Yale New Haven Hospital, Center for Outcomes Research and Evaluation, New Haven, Connecticut
3. Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
4. Hubert Department of Global Health, Rollins School of Public Health of Emory University, Atlanta, Georgia