1. Center for Evidence-Based Policy; Oregon Health & Science University; Portland Oregon USA
2. School of Medicine, Department of Family Medicine; Oregon Health & Science University; Portland Oregon USA
3. School of Medicine, Department of Medicine; Oregon Health & Science University; Portland Oregon USA
4. School of Public Health ; University of Witwatersrand; Johannesburg South Africa
5. Department of Obstetrics and Gynaecology, School of Medicine; University of Zambia; Lusaka Zambia
6. Women and Newborn Hospital; University Teaching Hospital; Lusaka Zambia