About the Authors

Suellen Miller

suellenmiller@gmail.com

Affiliation Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California, United States of America

Eduardo F. Bergel

Affiliation Instituto de Efectividad Clínica y Sanitaria, Buenos Aires, Argentina

Alison M. El Ayadi

Affiliation Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California, United States of America

Luz Gibbons

Affiliation Instituto de Efectividad Clínica y Sanitaria, Buenos Aires, Argentina

Elizabeth A. Butrick

Affiliation Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California, United States of America

Thulani Magwali

Affiliation Department of Obstetrics and Gynecology, University of Zimbabwe, Harare, Zimbabwe

Gricelia Mkumba

Affiliation Department of Obstetrics and Gynecology, University Teaching Hospital, Lusaka, Zambia

Christine Kaseba

Affiliation Department of Obstetrics and Gynecology, University Teaching Hospital, Lusaka, Zambia

N. T. My Huong

Affiliation The Department of Reproductive Health and Research of the United Nations Development Programme/United Nations Population Fund/United Nations Children’s Fund/World Health Organization/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, World Health Organization, Geneva, Switzerland

Jillian D. Geissler

Affiliation Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, California, United States of America

Mario Merialdi

Affiliation The Department of Reproductive Health and Research of the United Nations Development Programme/United Nations Population Fund/United Nations Children’s Fund/World Health Organization/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, World Health Organization, Geneva, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SM. Analyzed the data: EFB AE LG. Wrote the paper: SM EFB LG EAB AE. Supervised the study, provided administrative & technical support and revised drafts: TM GM CK. Principal investigator for the study and oversaw implementation of the study and interpreted results: SM. Oversaw database creation management: EFB. Supervised and study and cleaned the data: EAB. Involved in literature searches, figure development and data cleaning: JG. Helped acquire funding: MM. Created figures & tables, data cleaning and data interpretation: AE. Database management: NTMH.