Insyira, A.R. et al. 2022. Gerd-Q Score As Outcome Parameter Of Anterior vs. Posterior Peroral Endoscopical Myotomy in Acalasia Patient. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy. 23, 2 (Sept. 2022), 144–149. DOI:https://doi.org/10.24871/2322022144-149.