About the Authors

Richard Banda

richardbanda@gmail.com; richard.banda@student.uib.no

Current Address: Centre for International Health, University of Bergen, Bergen, Norway

Affiliation Central Statistical Office, Lusaka, Zambia

Ingvild Fossgard Sandøy

Affiliation Centre for International Health, University of Bergen, Bergen, Norway

Knut Fylkesnes

Affiliation Centre for International Health, University of Bergen, Bergen, Norway

Fanny Janssen

Current Address: The Netherlands Interdisciplinary Demographic Institute, The Hague, The Netherlands

Affiliation Population Research Centre, University of Groningen, Groningen, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RB. Performed the experiments: RB. Analyzed the data: RB IFS KF FJ. Wrote the paper: RB IFS KF FJ. Review of the manuscript: IFS KF. Detailed review of the manuscript: FJ.