Pearce, Michael C.; Venter, Marietjie; Schouwstra, Tjitske; Van Eeden, Charmaine; Jansen van Vuren, Petrus; Paweska, Janusz Tadeusz; Liu, Bo; Du Plessis, Arrie(OpenJournals Publishing, 2013-11-21)
Steyn, Jumari; Botha, Elizabeth; Stivaktas, Voula; Buss, Peter Erik; Beechler, Brianna R.; Myburgh, Jan G.; Steyl, Johan Christian Abraham; Williams, June Heather; Venter, Marietjie(Centers for Disease Control and Prevention, 2019-12)