Pengsaa, Prasit, Banchong Udomthavornsuk, Vitaya Titapan, and Vanchai Vatanasapt. “The Epidemiology of Ovarian Cancer in Khon Kaen 1985-1989”. Thai Journal of Obstetrics and Gynaecology 2, no. 2 (July 1, 1990): 95–101. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/257889.