Shahzad, S., T. Younus, and E. Khan. “Anesthetic Management for Endoscopic Retrograde Cholangiopancreatography in Bronchobiliary Fistula: A Case Report”. Anaesthesia, Pain & Intensive Care, Vol. 25, no. 3, June 2021, pp. 399–401, doi:10.35975/apic.v25i3.1517.