Population genetic structure of Streptococcus pneumoniae in Kilifi, Kenya, prior to the introduction of pneumococcal conjugate vaccine - Brueggemann, A; Muroki, B; Kulohoma, B; Karani, A; Wanjiru, E; Morpeth, S; Kamau, T; Sharif, S; Scott, J (PLoS ONE, 2013)