Authors: 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 Journal: PLoS One Date: 2009-03-31 Impact factor: 3.240