Ozkal, A., Sensoy, G., Acuner, C., Belet, N., & Güney, A. K. (2012). Seroprevalence of Bordetella pertussis immunoglobulin G antibodies among children in Samsun, Turkey. The Turkish Journal of Pediatrics, 54(1), 15-19. https://turkjpediatr.org/article/view/1582