Kumar, B., Raut, K., & Routray, S. S. (2017). Fentanyl and fentanyl plus lidocaine on attenuation of haemodynamic stress response to laryngoscopy: a comparative study in controlled hypertensive patients posted for laparoscopic cholecystectomy. International Journal of Research in Medical Sciences, 3(12), 3687–3690. https://doi.org/10.18203/2320-6012.ijrms20151423