Abdi, S., Forotan, M., Nikzamir, A., Zomorodi, S., & Jahani-Sherafat, S. (2015). The early efficacy of Heller myotomy in the treatment of Iranian patients with achalasia. Gastroenterology and Hepatology from Bed to Bench, 9(1), 30–35. https://doi.org/10.22037/ghfbb.v1i9.705