Fig. 1. Study flowchart. Study selection, subject distribution, and procedure performance is outlined. POEM, peroral endoscopic myotomy; PD, pneumatic dilatation; US, ultrasound; HRIM, high-resolution impedance manometry; TBE, timed barium esophagography; MT, muscle thickness; MCSA, muscle cross-sectional area; LCSA, lumen cross-sectional area.
© J Neurogastroenterol Motil
