Jason Abdallah Ronnie Fass
10.5056/jnm15162
J Neurogastroenterol Motil
2016 Jan 31;22(1):153-6.
esophageal achalasia esophageal motility disorders esophagus manometry
CC BY-NC
https://pubmed.ncbi.nlm.nih.gov/26717932/
PMC4699733
26717932
Progression of Jackhammer Esophagus to Type II Achalasia
2016