“Attenuation of Hemodynamic Responses to Endotracheal Extubation: A Prospective Randomised Controlled Study Between Two Different Doses of Verapamil”. International Journal of Biomedical Research 4, no. 12 (December 13, 2013): 663–669. Accessed March 11, 2026. https://ssjournals.co.in/index.php/ijbr/article/view/906.