Kanoksin, S., S. Techapongsatorn, P. Charoensombatamorn, and S. Tankittiwat. “Off-pump Coronary Artery Bypass Grafting in BMA Medical College and Vajira Hospital”. Vajira Medical Journal : Journal of Urban Medicine, vol. 51, no. 3, Sept. 2011, pp. 171-7, https://he02.tci-thaijo.org/index.php/VMED/article/view/317.