1. Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor
2. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
3. Program on Women’s Healthcare Effectiveness Research, University of Michigan, Ann Arbor
4. Department of Internal Medicine, University of Michigan, Ann Arbor
5. Michigan Institute for Clinical and Health Research, University of Michigan, Ann Arbor
6. Institute for Population Health, Detroit, Michigan
7. Department of Emergency Medicine, Henry Ford Health System, Detroit, Michigan
8. Department of Surgery, University of Michigan, Ann Arbor
9. Center for Healthcare Outcomes and Policy, University of Michigan, Ann Arbor