About the Authors
SOS Children's Villages International, Addis Ababa, Ethiopia
Center for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
Addis Ababa Health Bureau, Addis Ababa, Ethiopia
International Institute of Child Health, London, United Kingdom
Brighton and Sussex Medical School, Brighton, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: GA CA GD TD. Analyzed the data: CA FT GA TD GD. Wrote the paper: CA GA FT. Developed the study instruments: CA GD GA TD. Data collection: CA GA. Revised the manuscript for substantial intellectual content: GA CA GD TD FT GD.