Andrew Nyandigisi, Dorothy Memusi, Agneta Mbithi, Newton Ang'wa, Mildred Shieshia, Alex Muturi, Raymond Sudoi, Sophie Githinji, Elizabeth Juma, Dejan Zurovac
PLoS One. 2011; 6(9): e24781. Published online 2011 September 14. doi: 10.1371/journal.pone.0024781