Khan, M. A., K. J. Siddiqi, and M. Aqeel. “Lidocaine 4% Spray Is Better Than Intracuff Lidocaine 2% for Reducing the Incidence of Postextubation Cough in Patients Undergoing Total Abdominal Hysterectomy”. Anaesthesia, Pain & Intensive Care, Jan. 2019, pp. 162-6, https://apicareonline.com/index.php/APIC/article/view/411.