Bancila, Ion, and Cristian Gheorghe. 2017. “Heller Myotomy and Endoscopic Balloon Dilation May Be Equally Effective in the Shortand Long-Term”. Journal of Gastrointestinal and Liver Diseases 26 (3):319-21. https://doi.org/10.15403/jgld.2014.1121.263.hll.