Das, Partha Pratim, Pran Gopal Datta, and Anindita Datta. 2011. “Pattern of Electrocardiographic Changes in Pre-Operative Check-up in Patients Undergoing ENT Surgery”. Bangabandhu Sheikh Mujib Medical University Journal 4 (2):56-59. https://doi.org/10.3329/bsmmuj.v4i2.8630.