1 Department of Sexual and Reproductive Health and Research, including UNDP/ UNFPA/UNICEF/WHO/ World Bank Special programme of Research, Development and Research Training in Human Reproduction, World Health Organization, Geneva, Switzerland kabrar@who.int.
2 Consultant, Department of Sexual and Reproductive Health and Research, World Health Organization, Geneva, Switzerland.
3 World Health Organization, Kinshasa Gombe, Democratic Republic of Congo.
4 Department of Sexual and Reproductive Health and Research, including UNDP/ UNFPA/UNICEF/WHO/ World Bank Special programme of Research, Development and Research Training in Human Reproduction, World Health Organization, Geneva, Switzerland.