Peroral endoscopic myotomy with fundoplication (POEM-F) for achalasia: Systematic review and meta-analysis - Harishankar Gopakumar; Eugene Annor; Ishaan Vohra; Iman Andalib; Amy Tyberg; Avik Sarkar; Haroon Shahid; Mine Carames; Juan Carlos Carames; Giovanna Porfilio Gularte; Abed Al-Lehibi; Resheed Alkhiari; et al. (Endoscopy International Open)