I Gede Sugiana Karaeng, Rasyidah, and Efriyan Imantika. “Diagnosis and Management of Achalasia in Children ”. Medical Profession Journal of Lampung 9, no. 2 (July 31, 2019): 198-204. Accessed December 21, 2024. http://journalofmedula.com/index.php/medula/article/view/258.