About the Authors

Nicholas N. A. Kyei


Affiliation Public Health Division, 37 Military Hospital, Accra, Ghana

Oona M. R. Campbell

Affiliation Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom

Sabine Gabrysch

Affiliation Epidemiology and Biostatistics Unit, Institute of Public Health, University of Heidelberg, Heidelberg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Had idea for study: OC. Identified datasets and cleaned datasets: SG. Analyzed the data: NK SG. Wrote the paper: NK SG OC.