1. UNDP, UNFPA, UNICEF, 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
2. Brazilian Cochrane Center and Department of Obstetrics São Paulo School of Medicine São Paulo Federal University São Paulo Brazil
3. Ministry of Education–Shanghai Key Laboratory of Children's Environmental Health Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai China