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Khan, Z.A., Akram, F., Amin, S., Orakzai, M.S., Muhammad, A.M., Naseer, Z.B., Zohaib, A. , Basheer, Y. and Qadeer, A. 2023. Design and Fabrication of Heart Rate and Oxygen Saturation Measurement Device using LED-LED Configuration and to Study Correlation of PPG Signal Amplitude with Breathing Rate . Pakistan Journal of Scientific Research. 3, 1 (Jul. 2023), 113–118. DOI:https://doi.org/10.57041/pjosr.v3i1.968.