Ngugi, C.W., D Schmidt, R.K. Wanyoro, H Boga, P Wanzala, A.W.T. Muigai, J.N. Mbithi, M von Knebel Doeberitz, and M Reuschenbach. “Prevalence of Human Papillomavirus Infection by Age and Cervical Cytology in Thika, Kenya”. African Journal of Health Sciences 19, no. 3-4 (November 10, 2020): 53–62. Accessed October 11, 2026. https://www.ajol.info/index.php/ajhs/article/view/201478.