Jasim, Noori Hanoon, et al. “Laparoscopic Heller’s Myotomy for Achalasia Cardia: An Outcome and Experience of a Single-Center Study”. Al-Rafidain Journal of Medical Sciences ( ISSN 2789-3219 ), vol. 10, no. 2, May 2026, pp. 242-7, doi:10.54133/ajms.v10i2.2949.