Pongsuthirak, P., Vutyavanich, T., Apichartpiyakul, C., Vithayasai, V., & Piromiertamorn, W. (1995). Seroprevalence of Human Immunodeficiency Virus in Patients with Ectopic Pregnancies . Thai Journal of Obstetrics and Gynaecology, 7(2), 123–129. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/257755