1.
Özdemir H, Köse SK, Ertek M, et al. Risk factors for nasopharyngeal carriage of Streptococcus pneumoniae in healthy Turkish children after the addition of heptavalent pneumococcal conjugate vaccine (PCV7) to the national vaccine schedule. Turk J Pediatr. 2013;55(6):575-583. Accessed April 21, 2026. https://turkjpediatr.org/article/view/1559