Kanjanavirojkul, Nipa, Pangchat Aranyawasri, Pakinee Ratchapan, and Pharadee Tongtidram. 2015. “Age Span of Human Papilloma Virus-Infected (HPV) Women and the Accuracy of HPV Diagnosis from Pap Smear”. Srinagarind Medical Journal 30 (3):276-81. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/39306.