[1] Kenya Govt Med Res Ctr, Kisumu, Kenya
[2] London Sch Hyg & Trop Med, London, England
[3] Univ Nairobi, Nairobi, Kenya
[4] Ctr Dis Control Kenya, Nairobi, Kenya
[5] Kenya Govt Med Res Ctr, Nairobi, Kenya
[6] Minist Hlth, Natl Malaria Control Program, Nairobi, Kenya
[7] Univ Liverpool Liverpool Sch Trop Med, Liverpool, Merseyside, England
[8] World Hlth Org, Geneva, Switzerland
[9] Kenya Govt Med Res Ctr, Kilifi, Kenya