Alauddin, M, BMM Choudhury, AK Beg, SAN Alam, and AYFE Chowdhury. 2010. “Cervical Epidural Anesthesia for Carotid Endarterectomy”. Cardiovascular Journal 2 (2):256-57. https://doi.org/10.3329/cardio.v2i2.6650.