About the Authors
Direction Nationale de la Santé, Bamako, Mali
Ministere de la Santé et de la Prévention, Dakar, Senegal
Multi-disease Surveillance Centre, Ouagadougou, Burkina Faso
University Cheikh Anta Diop, Dakar, Senegal
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MOT YB LD LK LT JHFR. Performed the experiments: MOT MDS AB YB KD SFG LK KM AFS LT ST. Analyzed the data: MOT MDS AB YB KD LD SFG LK KM AFS LT ST JHFR. Contributed reagents/materials/analysis tools: LT JHFR. Wrote the paper: MOT MDS YB LK LT JHFR.