Sharma, Ankush, Tariq Abdullah Mir, Shaheena Parveen, and Altaf Hussain Shah. “An Unusal Achalasic Sigmoid Esophagus”. JMS SKIMS 25, no. 3 (September 12, 2022): 60-61. Accessed October 17, 2026. https://jmsskims.org/index.php/jms/article/view/1220.