Pan-African polyspecific antivenom produced by caprylic acid purification of horse IgG: an alternative to the antivenom crisis in Africa. by Gutiérrez, J, Rojas, E, Quesada, L, León, G, Núñez, J, Laing, G, Sasa, M, Renjifo, J, Nasidi, A, Warrell, D, Theakston, R, Rojas, G