Manonai, Jittima, Mayuree Jirapinyo, Urusa Theppisai, Charnchai Suchartwatnachai, Chalermsri Thanuntasath, and Sangchai Preutthipun. 1999. “Endometriosis in Infertile Women at Ramathibodi Hospital”. Thai Journal of Obstetrics and Gynaecology 11 (4). Bangkok, Thailand:223. https://he02.tci-thaijo.org/index.php/tjog/article/view/95034.