1. School of Nursing, Columbia University , New York, New York, USA
2. Heilbrunn Department of Population and Family Health, Mailman School of Public Health, Columbia University , New York, New York, USA
3. College of Public Health, University of South Florida , Tampa, Florida, USA
4. Department of Family, Community, and Health System Science, College of Nursing, University of Florida , Gainesville, Florida, USA
5. Department of Epidemiology, Columbia University Mailman School of Public Health , New York, New York, USA
6. Johns Hopkins University School of Nursing , Baltimore, Maryland, USA
7. Every Mother Counts , New York, New York, USA
8. Center for Behavioral Intervention Technologies, Department of Preventive Medicine, Northwestern University , Chicago, Illinois, USA
9. Division of Infectious Disease, Department of Medicine, Columbia University Irving Medical Center , New York, New York, USA