Clinical analysis of oral clonidine and intramuscular pethidine with glycopyrrolate as premedication in patient under general anaesthesia: Effect of oral clonidine as premedication. International Journal of Biomedical Research, [S. l.], v. 10, n. 4, p. e5119, 2019. DOI: 10.7439/ijbr.v10i4.5119. Disponível em: https://ssjournals.co.in/index.php/ijbr/article/view/5119. Acesso em: 8 mar. 2026.