About the Authors

Brigitte Walther

waltherbrigitte@t-online.de

Affiliation Statistics and Data Management Department, Medical Research Council, Fajara, The Gambia

Safayet Hossin

Affiliation Statistics and Data Management Department, Medical Research Council, Fajara, The Gambia

John Townend

Affiliation Statistics and Data Management Department, Medical Research Council, Fajara, The Gambia

Neil Abernethy

Affiliation Department of Bio-Informatics, University of Washington, Seattle, Washington, United States of America

David Parker

Affiliation Statistics and Data Management Department, Medical Research Council, Fajara, The Gambia

David Jeffries

Affiliations Statistics and Data Management Department, Medical Research Council, Fajara, The Gambia, Population Services International (PSI), Washington, D. C., United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BW SH JT NA DP DJ. Performed the experiments: BW. Analyzed the data: BW JT DJ. Wrote the paper: BW DJ. Data acquisition and management: BW SH DP. Revised the manuscript critically for intellectual content, and approved the final version to be published: BW SH JT NA DP DJ.