1. Department of Population, Family and Reproductive Health Johns Hopkins Bloomberg School of Public Health Baltimore MD 21205 USA
2. University of Ibadan Ibadan Nigeria
3. Center for Research, Evaluation Resources and Development Ile‐Ife Osun Nigeria
4. Statistics and Population Studies Department University of the Western Cape Bellville South Africa
5. University of Kinshasa Kinshasa Democratic Republic of Congo
6. International Center for Reproductive Health Nairobi Kenya
7. Technical University of Mombasa Mombasa Kenya
8. Department of Public Health and Primary Care Faculty of Medicine and Health Sciences Ghent University Gent Belgium