Kengsakul, Karun, Pratharn Chinayon, Suwachai Intaraprasert, Varavudh Sumawong, and Sompop Limpongsanarak. 1999. “Improving the Reliability of OSCEs for the Royal Thai College of Obstetricians and Gynecologists Board Examination”. Thai Journal of Obstetrics and Gynaecology 11 (2). Bangkok, Thailand:93-96. https://he02.tci-thaijo.org/index.php/tjog/article/view/257166.