1. Centers for Disease Control and Prevention Eastern Massachusetts Prevention Epicenter, Boston, Massachusetts, USAHarvard Medical School and Harvard Pilgrim Health Care, Boston, Massachusetts, USABrigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
2. Centers for Disease Control and Prevention Eastern Massachusetts Prevention Epicenter, Boston, Massachusetts, USAHarvard Medical School and Harvard Pilgrim Health Care, Boston, Massachusetts, USA
3. Centers for Disease Control and Prevention Eastern Massachusetts Prevention Epicenter, Boston, Massachusetts, USABrigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
4. Centers for Disease Control and Prevention Eastern Massachusetts Prevention Epicenter, Boston, Massachusetts, USATufts Health Plan, Boston, Massachusetts, USA
5. Centers for Disease Control and Prevention Eastern Massachusetts Prevention Epicenter, Boston, Massachusetts, USABlue Cross Blue Shield of Massachusetts, Boston, Massachusetts, USA
6. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
7. Blue Cross Blue Shield of Massachusetts, Boston, Massachusetts, USA
8. Centers for Disease Control and Prevention Eastern Massachusetts Prevention Epicenter, Boston, Massachusetts, USABeth Israel Deaconess Medical Center, Boston, Massachusetts, USA