RELIABILITY OF THE SIMPLE 20-MINUTE WHOLE-BLOOD CLOTTING TEST (WBCT20) AS AN INDICATOR OF LOW PLASMA-FIBRINOGEN CONCENTRATION IN PATIENTS ENVENOMED BY BOTHROPS SNAKES by Sanomartins, I, Fan, H, Castro, S, Tomy, S, Franca, F, Jorge, M, Kamiguti, A, Warrell, D, Theakston, R, Cardoso, J, Leite, R, Nishioka, S, Avila, A, Santoro, M, Chudzinski, A, Kelen, E, Hirata, M, Mirandola, R