ladsila, salakchit. “The Validity of the Cardiac Rehabilitation Manual in Cardiovascular Surgery Patients After Discharge from Roi Et Hospital”. Srinagarind Medical Journal, vol. 37, no. 5, Oct. 2022, pp. 442-8, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/255014.