Hasan, K., Z. Rahman, A. Sultana, and N. Ahsan. “Postoperative Pain Management After Sternotomy In Off-Pump Coronary Artery Bypass Graft (CABG) Surgery - A Comparative Study Between NSAID (Diclofenac Sodium) and Opioid (Pethidine)”. Bangabandhu Sheikh Mujib Medical University Journal, vol. 3, no. 2, Feb. 2011, pp. 91-96, doi:10.3329/bsmmuj.v3i2.7059.