Pradhan, A. P., A. Sharma, A. B. Shrestha, T. Gurung, S. Shrestha, U. Basnet, J. P. Thakur, and M. Kumar. “Prediction of Hypotension Using Perfusion Index Following Spinal Anesthesia in Lower Segment Caesarean Section”. Nepal Journal of Obstetrics and Gynaecology, vol. 15, no. 2, Nov. 2020, doi:10.3126/njog.v15i2.32909.