1. Role of Peroral Endoscopic Myotomy in Advanced Achalasia Cardia With Sigmoid and/or Megaesophagus: A Systematic Review and Metanalysis
   Harshal S Mandavdhare et al, 2022, Journal of Neurogastroenterology and Motility CrossRef
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   A. A. Smirnov et al, 2023, Grekov's Bulletin of Surgery CrossRef
3. OUTCOME OF PER ORAL ENDOSCOPIC MYOTOMY (POEM) IN SIGMOID ACHALASIA AT A MEDIAN FOLLOW UP OF 17 MONTHS
   Harshal S MANDAVDHARE et al, 2022, Arquivos de Gastroenterologia CrossRef
4. Management of End-Stage Achalasia
   Attila Csendes Juhasz et al, 2022, Foregut: The Journal of the American Foregut Society CrossRef