Tangtrakul, S., and S. Srisupundit. “Endometrial Curettage in Nonmetastatic Gestational Trophoblastic Disease (NMTD)”. Thai Journal of Obstetrics and Gynaecology, vol. 4, no. 1, Jan. 1992, pp. 51-53, https://he02.tci-thaijo.org/index.php/tjog/article/view/257855.