The Journey from Endoscopic Submucosal Dissection to Third Space EndoscopyEast versus West: Comparisons and Implications in Adaptation to PracticeBuilding the Toolbox of Devices to Optimize a Practice in Submucosal EndoscopyUnderstanding the Principles of Electrosurgery for Endoscopic Surgery and Third Space EndoscopyTraining in Endoscopic Submucosal Dissection in the United States: The Current ParadigmEndoscopic Submucosal Dissection in the Esophagus: Indications, Techniques, and OutcomesEndoscopic Submucosal Dissection in the Stomach and Duodenum: Techniques, Indications, and OutcomesEndoscopic Submucosal Dissection in the Colon and Rectum: Indications, Techniques, and Outcomes Indications and Outcomes of Per Oral Endoscopic Myotomy from Mouth to AnusPeroral Endoscopic Myotomy Technique, from Mouth to AnusSubmucosal Tunneling Techniques for Tumor ResectionNontunneling Full Thickness Techniques for NeoplasiaEndoscopic Closure: Tools and TechniquesManagement of Adverse Events of Submucosal EndoscopyA Look into the Future of Endoscopic Submucosal Dissection and Third Space Endoscopy: The Role for Robotics and Other Innovation