Ajjimakorn, Sauwakon, Chalermsri Thanuntaseth, Mayuree Jirapinyo, Tongtis Tongyai, and Daoroong Kangwanpong. 1989. “Knowledge, Attitudes and Acceptance of Amniocentesis Clients in Ramathibodi Hospital”. Thai Journal of Obstetrics and Gynaecology 1 (2). Bangkok, Thailand:133-37. https://he02.tci-thaijo.org/index.php/tjog/article/view/257909.