Haque, Naimul, et al. “High Thoracic Epidural Anaesthesia for Off-Pump CABG in a Spontaneously Breathing (conscious) Patient (ACAB)”. Journal of the Bangladesh Society of Anaesthesiologists, vol. 17, no. 1, Dec. 2009, pp. 48-51, doi:10.3329/jbsa.v17i1.4052.