“Arterial and end-tidal Carbon Dioxide Tension Changes during Spinal Anaesthesia in Upper Abdominal Laparoscopic Surgeries: A Comparison with General Anaesthesia”, J. Bangladesh Coll. Phys., vol. 37, no. 1, pp. 13–18, Dec. 2018, doi: 10.3329/jbcps.v37i1.39282.