1. Department of Obstetrics and Gynecology, NorthShore University HealthSystem, Evanston, IL, USA.
2. Institute for Policy Research, Northwestern University, Evanston, IL, USA.
3. Department of Sociology, Northwestern University, Evanston, IL, USA.
4. Pritzker School of Medicine, University of Chicago, Chicago, IL, USA.
5. Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
6. Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
7. Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
8. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
9. Department of Psychology, Northwestern University, Evanston, IL, USA.