Ekphaphan, N., W. Usupharach, P. Kittipanya-ngam, and M. Yasud. “Validity of Physical Therapy Pre-operative Multimedia Program for Open Heart Surgery”. Srinagarind Medical Journal, vol. 39, no. 5, Oct. 2024, pp. 504-12, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/261313.