A prospective randomized double blind study to compare the efficacy of oral Clonidine to intravenous Lignocaine for attenuation of haemodynamic response to laryngoscopy and tracheal intubation. International Journal of Biomedical Research, [S. l.], v. 7, n. 7, p. 499–510, 2016. DOI: 10.7439/ijbr.v7i7.3437. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/3437. Acesso em: 13 mar. 2025.