Freedman Lynn P, Kruk Margaret E
Department of Population and Family Health and Averting Maternal Death and Disability Program, Mailman School of Public Health, Columbia University, New York, NY 10032, USA.
Department of Health Policy and Management and Better Health Systems Initiative, Mailman School of Public Health, Columbia University, New York, NY 10032, USA.
Lancet. 2014 Sep 20;384(9948):e42-4. doi: 10.1016/S0140-6736(14)60859-X. Epub 2014 Jun 22.