Oranratnachai , Apichart, Thawatchai Tansathit, Chamnong Uttavichai, and Warunya Ittipunkul. 1996. “Intracytoplasmic Sperm Injection (ICSI) : the First Reported Case of Pregnancy in Thailand”. Thai Journal of Obstetrics and Gynaecology 8 (2). Bangkok, Thailand:127-33. https://he02.tci-thaijo.org/index.php/tjog/article/view/257696.