Amornpiyaphakorn, A., Naebpetch, W., & Photaworn, P. (2026). Development of Natural Rubber-Based Simulators for Normal Labor and Realistic Placental Delivery Training. Princess of Naradhiwas University Journal, 18(2), 143–164. retrieved from https://li01.tci-thaijo.org/index.php/pnujr/article/view/271394