Chaichana , T., and Z. Sun. “Epidemiological Relationship of Photoplethysmography Signal Derived from Arterial Stiffness and Blood Pressure to Coronary Artery Disease: A Systematic Review: Photoplethysmography Signals Linked to Coronary Artery Disease”. Vajira Medical Journal : Journal of Urban Medicine, vol. 68, no. 3, June 2024, p. e268820, doi:10.62691/vmj.2024.268820.