Khongthip, Yuthana, and Thitiwan Chaisuriyapun. 2013. “Risk of Malignancy Index for a Diagnosis of Ovarian Malignancy”. Thai Journal of Obstetrics and Gynaecology 21 (4). Bangkok, Thailand:156-62. https://he02.tci-thaijo.org/index.php/tjog/article/view/12315.