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Jafri, Rabab Z., Ali, Asad, Zhujun, Shao, Bhutta, Zulfiqar A., Abramson, Jon, Messonnier, Nancy E., Tevi-Benissan, Carol, Durrheim, David, Eskola, Juhani, Fermon, Florence, Klugman, Keith P., Ramsay, Mary, Sow, Samba. BioMed Central; 2013. Global epidemiology of invasive meningococcal disease.