1. Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
2. Monitoring, Evaluation and Research Unit, Amref Health Africa, Addis Ababa, Ethiopia
3. School of Public Health, University of Sydney, Sydney, Australia
4. Department of Community Health, University of Ghana, Accra, Ghana
5. Research Centre for Gender, Health & Ageing, University of Newcastle, Newcastle, Australia
6. SAGE, World Health Organization, Geneva, Switzerland