Sritongchai, C., A. Luamprapat, P. Mekariya, S. Senapad, and M. Benjapibal. “Cryosurgical Treatment of Benign Lesions of the Cervix”. Thai Journal of Obstetrics and Gynaecology, vol. 7, no. 2, July 1995, pp. 105-8, https://he02.tci-thaijo.org/index.php/tjog/article/view/257752.