Utriyaprasit, K. ., P. . Hengcharoensuwan, S. . Sindhu, and P. . Laksanabunsong. “Relationship Between Selected Factors and Length of Hospital Stay in Coronary Artery Bypass Graft Patients”. Siriraj Medical Journal, vol. 63, no. 2, Apr. 2020, pp. 52-57, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/240907.