“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, vol. 10, no. 4, Apr. 2019, p. e5119, https://doi.org/10.7439/ijbr.v10i4.5119.