Al-Shukry, S. M. “A Swallowed Fishbone Penetrating the Oesophagus into the Sternomastoid Muscle”. Sultan Qaboos University Medical Journal, vol. 5, no. 1, Apr. 2003, pp. 51-52, https://journals.squ.edu.om/index.php/squmj/article/view/1246.