S. Lama Moktan and M. Karki, “Comparison of non-invasive haemodynamic monitors of stress response to endo-tracheal intubation with perfusion index in patients undergoing elective surgery”, J. Soc. Surg. Nepal, vol. 23, no. 2, pp. 9–13, Dec. 2020, doi: 10.3126/jssn.v23i2.35797.