1. Center for Health Policy and Inequalities Research; Duke Global Health Institute; Durham North Carolina USA
2. Department of Family Medicine and Community Health; Duke University; Durham North Carolina USA
3. Norwegian Institute of Public Health; Oslo Norway
4. Cochrane Response; Cochrane; London UK
5. Independent consultant; London UK
6. North Curry UK
7. Department of Sexual and Reproductive Health; World Health Organization; Geneva Switzerland
8. Health Systems Research Unit; South African Medical Research Council; Cape Town South Africa