Fig. 1From: A preliminary study on designing a cluster randomized control trial of two new mosquito nets to prevent malaria parasite infectionThe boundaries with buffer zones between clusters and the numbers of anopheline mosquitoes. Anopheles funestus s. l. and An. gambiae s. l. were collected biweekly from 10 sentinel houses within each cluster using the pyrethrum spray catch method during the period from April 2009 to April 2010Back to article page