Thivakar, Yogeswaran. “The Cost of an Elective Coronary Angiogram at the National Hospital of Sri Lanka”. International Journal of Research in Engineering, Science and Management 6, no. 11 (November 6, 2023): 1–6. Accessed May 20, 2024. https://journal.ijresm.com/index.php/ijresm/article/view/2846.