Yvonne Geissbühler, Khadija Kannady, Prosper Pius Chaki, Basiliana Emidi, Nicodem James Govella, Valeliana Mayagaya, Michael Kiama, Deo Mtasiwa, Hassan Mshinda, Steven William Lindsay, Marcel Tanner, Ulrike Fillinger, Marcia Caldas de Castro, Gerry Francis Killeen
PLoS ONE. 2009; 4(3): e5107. Published online 2009 March 31. doi: 10.1371/journal.pone.0005107