Percin, Duygu, Yasemin Ay Altintop, and Bulent Sumerkan. “Ten-Year Surveillance of Invasive Streptococcus Pneumoniae Isolates in Central Turkey Prior to the Introduction of a Conjugate Vaccine”. The Journal of Infection in Developing Countries 4, no. 09 (May 4, 2010): 560–565. Accessed May 17, 2024. https://www.jidc.org/index.php/journal/article/view/21045368.