Pyun, J. E., Choi, D. M., Lee, J. H., Yoo, K. H., & Shim, J. O. (2015). Achalasia Previously Diagnosed as Gastroesophageal Reflux Disease by Relying on Esophageal Impedance-pH Monitoring: Use of High-Resolution Esophageal Manometry in Children. Pediatr Gastroenterol Hepatol Nutr.

Pyun, Jung Eun, Da Min Choi, Jung Hwa Lee, Kee Hwan Yoo, a Jung Ok Shim. "Achalasia Previously Diagnosed As Gastroesophageal Reflux Disease By Relying On Esophageal Impedance-pH Monitoring: Use of High-Resolution Esophageal Manometry in Children." Pediatr Gastroenterol Hepatol Nutr 2015.

Pyun, Jung Eun, et al. "Achalasia Previously Diagnosed As Gastroesophageal Reflux Disease By Relying On Esophageal Impedance-pH Monitoring: Use of High-Resolution Esophageal Manometry in Children." Pediatr Gastroenterol Hepatol Nutr 2015.