Molecular epidemiology of pneumococci obtained from Gambian children aged 2–29 months with invasive pneumococcal disease during a trial of a 9-valent pneumococcal conjugate vaccine... oleh Vaughan Adeola, Oluwalana Claire, Okoko Brown, Enwere Godwin, Pfluger Valentin, O'Callaghan John, Awine Tim, Biney Ekow, Dada-Adegbola Hannah, Antonio Martin, Zaman Syed MA, Pluschke Gerd, Greenwood Brian M, Cutts Felicity, Adegbola Richard A