Severe and fatal mass attacks by killer bees (africanized honey bees-apis mellifera scutellata) in brazil: clinicopathological studies with measurement of serum venom concentrations - Franca, F O S; Benvenuti, L A; Fan, H W; Dos Santos, D R; Hain, S H; Martins, F R P; Cardoso, J L C; Kamiguti, H S; Theakston, R D G; Warrell, D A (Quarterly Journal of Medicine, 1994)