ALKIM, C., DAĞLI, Ülkü, AKYÜREK, N., ŞAHİN, B., & BARLAS ULUSOY, N. (2009). Temporal variation in manometric findings in achalasia: A case report. Turkish Journal of Gastroenterology, 20(3), 204–208. https://doi.org/10.4318/tjg.2009.0008