For citations:

Korolev M.P., Fedotov L.E., Ogloblin A.L., Mamedov Sh.D., Gabdrakhmanova L.A. Peroral endoscopic myotomy in recurrence of esophageal achalasia after 40 years since heller myotomy. Grekov's Bulletin of Surgery. 2017;176(5):88-90. (In Russ.) https://doi.org/10.24884/0042-4625-2017-176-5-88-90