Montiel-Roa AJ, Rojas Franco BM, Dragotto Galván A, Mora Garbini SD. Surgical management of the esophageal achalasia in the IPS Central Hospital from january 2016 to december 2018. Cir. parag. [Internet]. 2020 Apr. 11 [cited 2025 Apr. 3];44(1):16-8. Available from: https://cirugia.org.py/index.php/revista/article/view/149