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- Kershaw, W. E., Chalmers, T. A. & Duke, B. O. L. (1954). Studies on the intake of microfilariae by their insect vectors, their survival, and their effect on the survival of their vectors. IV: The survival rate of Chrysops under laboratory conditions, and the effect upon it of Loa loa. Annals of Tropical Medicine and Parasitology, 48, 329–339.