Van Niekerk, Stephanie; Human, Stacey; Williams, June Heather; Van Wilpe, Erna; Pretorius, Marthi Andréa; Swanepoel, Robert; Venter, Marietjie(Centers for Disease Control & Prevention, 2015-12)
Botha, C.J. (Christoffel Jacobus); Crafford, Jan Ernst; Butler, V.P. Jr.; Stojanovic, M.N.; Labuschagne, Leonie(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2007-12)