“Premedication of Oral Clonidine 2mcg/kg and 4mcg/kg for Analgesic and Pressure Response During First Twenty-four Hours After Upper Abdominal Surgery: A Comparative Study”, j Bangladesh Soc Anaesthesiologists, vol. 35, no. 2, pp. 17–21, Jul. 2022, doi: 10.3329/jbsa.v35i2.67888.