Khan, Z. A., Akram, F., Amin, S., Orakzai, M. S., Muhammad, A. M., Naseer, Z. B., Zohaib, A. ., Basheer, Y., & 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), 113–118. https://doi.org/10.57041/vol3iss1pp113-118