1 Department of Epidemiology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana.
2 Laboratory for Antimalarial Resistance Monitoring and Malaria Operational Research, National Institute of Communicable Diseases (NCID), Johannesburg, South Africa.
3 Biosciences Department, Kenya Medical Research Institute (KEMRI) Wellcome Trust Research Programme, Kilifi, Kenya.