Qawqzeh Y, Kayed L, Otoom M, Alharbi M, Khan FA. The Investigating of Photoplethysmogram Waveform Amplitude Changes: Aging and Atherosclerosis. IJSBAR [Internet]. 2016 Nov. 16 [cited 2026 Mar. 7];30(3):126-33. Available from: https://gssrr.org/JournalOfBasicAndApplied/article/view/6555