Journal of the Association of General Surgeons of Thailand under the Royal of Patronage of HM the King , E.- in-C. (2021) “คำนำ ”, Journal of the Association of General Surgeons of Thailand under the Royal of Patronage of HM the King , 5(2), p. คำนำ. Available at: https://he02.tci-thaijo.org/index.php/agstjournal/article/view/249179 (Accessed: 23September2021).