About the Authors
- Joao Paulo Souza
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* E-mail: souzaj@who.int
Affiliation UNDP/UNFPA/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
- Jose Guilherme Cecatti
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Affiliation Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
- Samira M. Haddad
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Affiliation Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
- Mary Angela Parpinelli
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Affiliation Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
- Maria Laura Costa
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Affiliation Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
- Leila Katz
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Affiliation Department of Obstetrics, Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Recife, Pernambuco, Brazil
- Lale Say
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Membership of the Neoned Study Group and LNF Study Group is provided in the Acknowledgments.
Affiliation UNDP/UNFPA/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JPS JGC. Analyzed the data: JPS. Contributed reagents/materials/analysis tools: SMH LK. Wrote the paper: JPS. Performed the experiments (statistical modeling): JPS. Provided input to the discussion: MAP MLC LS. Read and approved the manuscript: MAP MLC LS.