Kaewkes, Danon, and Keetapong Pongtipakorn. 2020. “Prevalence and Clinical Risk Factors of Coronary Artery Disease in Rheumatic and Non-Rheumatic Valvular Heart Disease Patients Undergoing Preoperative Coronary Angiography”. Srinagarind Medical Journal 35 (1):7-13. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/239883.