1. WHO: WHO Expert Committee on Malaria. World Health Organ Tech Rep Ser. 2000, 892: i-v, 1-74.
2. WHO: Africa Malaria Report. 2003, 1-69.
3. Matson AT: The history of malaria in the highlands in Nandi. East Afr Med J. 1957, 34: 431-441.
4. Graham PCC: The incidence of malaria at high altitudes. J Nat Malaria Soc. 1948, 7: 275-284.
5. Roberts JMD: The control of epidemic malaria in the highlands of western Kenya. Part III. After the campaign. J Trop Hyg. 1964, 59: 230-237.