1. TeohAY, ChiuPW, Yu NgoDK, et al.Outcomes of endoscopic submucosal dissection versus endoscopic mucosal resection in management of superficial squamous esophageal neoplasms outside Japan. J Clin Gastroenterol2010;44:e190.

2. RajanE, GostoutCJ, FeitozaAB, et al.Widespread EMR: a new technique for removal of large areas of mucosa. Gastrointest Endosc2004;60:623. CrossRef

3. FeitozaAB, GostoutCJ, BurgartLJ, et al.Hydroxypropyl methylcellulose: a better submucosal fluid cushion for endoscopic mucosal resection. Gastrointest Endosc2003;57:41. CrossRef

4. GostoutCJ, KnipschieldMA. Submucosal endoscopy with mucosal resection: a hybrid endoscopic submucosal dissection in the porcine rectum and distal colon. Gastrointest Endosc2012;76:829. CrossRef

5. SumiyamaK, TajiriH, KatoF, et al.Pilot study for in vivo cellular imaging of the muscularis propria and ex vivo molecular imaging of myenteric neurons (with video). Gastrointest Endosc2009;69:1129. CrossRef

6. RajanE, GostoutCJ, Aimore BoninE, et al.Endoscopic full‐thickness biopsy of the gastric wall with defect closure by using an endoscopic suturing device:survival porcine study. Gastrointest Endosc2012;76:1014. CrossRef

7. ASGE, SAGES. ASGE/SAGES Working Group on Natural Orifice Translumenal Endoscopic Surgery: White Paper October 2005. Gastrointest Endosc2006;63:199. CrossRef

8. SumiyamaK, GostoutCJ, RajanE, et al.Transgastric cholecystectomy: transgastric accessibility to the gallbladder improved with the SEMF method and a novel multibending therapeutic endoscope. Gastrointest Endosc2007;65:679. CrossRef

9. SumiyamaK, GostoutCJ, RajanE, et al.Pilot study of transesophageal endoscopic epicardial coagulation by submucosal endoscopy with the mucosal flap safety valve technique (with video). Gastrointest Endosc2008;67:497. CrossRef

10. SumiyamaK, GostoutCJ, RajanE, et al.Submucosal endoscopy with mucosal flap safety valve. Gastrointest Endosc2007;65:688. CrossRef

11. SumiyamaK, GostoutCJ, RajanE, et al.Transesophageal mediastinoscopy by submucosal endoscopy with mucosal flap safety valve technique. Gastrointest Endosc2007;65:679. CrossRef

12. PauliEM, HaluckRS, IonescuAM, et al.Directed submucosal tunneling permits in‐line endoscope positioning for transgastric natural orifice translumenal endoscopic surgery (NOTES). Surg Endosc2010;24:1474. CrossRef

13. PasrichaPJ, HawariR, AhmedI, et al.Submucosal endoscopic esophageal myotomy: a novel experimental approach for the treatment of achalasia. Endoscopy2007;39:761. CrossRef

14. BoninEA, MoranE, BingenerJ, et al.A comparative study of endoscopic full‐thickness and partial‐thickness myotomy using submucosal endoscopy with mucosal safety flap (SEMF) technique. Surg Endosc2012;26:1751. CrossRef

15. WoodwardT, McCluskeyD3rd, WallaceMB, et al.Pilot study of transesophageal endoscopic surgery: NOTES esophagomyotomy, vagotomy, lymphadenectomy. J Laparoendosc Adv Surg Tech A2008;18:743. CrossRef

16. PauliEM, MathewA, HaluckRS, et al.Technique for transesophageal endoscopic cardiomyotomy (Heller myotomy): video presentation at the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) 2008, Philadelphia, PA. Surg Endosc2008;22:2279. CrossRef

17. PerrettaS, DallemagneB, DonatelliG, et al.Transoral endoscopic esophageal myotomy based on esophageal function testing in a survival porcine model. Gastrointest Endosc2011;73:111. CrossRef

18. StavropoulosS, ModayilR, FriedelD, et al.The International Per Oral Endoscopic Myotomy Survey (IPOEMS):a snapshot of the global POEM Experience.

19. InoueH, MinamiH, KobayashiY, et al.Peroral endoscopic myotomy (POEM) for esophageal achalasia, Endoscopy2010;42:265. CrossRef

20. StavropoulosS, HarrisM, HidaS, et al.Endoscopic submucosal myotomy for the treatment of achalasia. Gastrointest Endosc2010;72:1309. CrossRef

21. SumiyamaK, KiesslichR, OhyaTR, et al.In vivo imaging of enteric neuronal networks in humans using confocal laser endomicroscopy. Gastroenterology2012;143:1152. CrossRef

22. OhyaTR, SumiyamaK, Takahashi‐FujigasakiJ, et al.In vivo histologic imaging of the muscularis propria and myenteric neurons with probe‐based confocal laser endomicroscopy in porcine models (with videos). Gastrointest Endosc2012;75:405. CrossRef

23. KallooAN, SinghVK, JagannathSB, et al.Flexible transgastric peritoneoscopy: a novel approach to diagnostic and therapeutic interventions in the peritoneal cavity. Gastrointest Endosc2004;60:114. CrossRef

24. FongDG, PaiRD, ThompsonCC. Transcolonic endoscopic abdominal exploration: a NOTES survival study in a porcine model. Gastrointest Endosc2007;65:312. CrossRef

25. von DeliusS, FeussnerH, WilhelmD, et al.Transgastric in vivo histology in the peritoneal cavity using miniprobe‐based confocal fluorescence microscopy in an acute porcine model. Endoscopy2007;39:407. CrossRef

26. FeretisC, KalantzopoulosD, KoulourisP, et al.Endoscopic transgastric procedures in anesthetized pigs: technical challenges, complications, and survival. Endoscopy2007;39:394. CrossRef

27. WaghMS, MerrifieldBF, ThompsonCC. Endoscopic transgastric abdominal exploration and organ resection: initial experience in a porcine model. Clin Gastroenterol Hepatol2005;3:892. CrossRef

28. VoermansRP, van Berge HenegouwenMI, de CubaE, et al.Randomized, blinded comparison of transgastric, transcolonic, and laparoscopic peritoneoscopy for the detection of peritoneal metastases in a human cadaver model. Gastrointest Endosc2010;72:1027. CrossRef

29. HazeyJW, NarulaVK, RentonDB, et al.Natural‐orifice transgastric endoscopic peritoneoscopy in humans: initial clinical trial. Surg Endosc2007;22:16. CrossRef

30. LeeCK, LeeSH, ChungIK, et al.Human diagnostic transgastric peritoneoscopy with the submucosal tunnel technique performed with the patient under conscious sedation (with video). Gastrointest Endosc2010;72:889. CrossRef

31. LeeSH, KimSJ, LeeTH, et al.Human applications of submucosal endoscopy under conscious sedation for pure natural orifice transluminal endoscopic surgery. Surg Endosc2013;27 (8):3016.

32. KonoY, YasudaK, HiroishiK, et al.Transrectal peritoneal access with the submucosal tunnel technique in NOTES: a porsine survival study. Surg Endosc2013;27:278. CrossRef

33. TakizawaK, BrahmbhattR, KnipschieldMA, et al.Transcolonic peritoneoscopy by using submucosal endoscopy with mucosal flap for the detection of peritoneal bead targeting in the porcine survival model: a feasibility and effectiveness study. Gastrointest Endosc2014;79:127. CrossRef

34. von DeliusS, FeussnerH, HenkeJ, et al.Submucosal endoscopy: a novel approach to en bloc endoscopic mucosal resection (with videos). Gastrointest Endosc2007;66:753. CrossRef

35. SumiyamaK, TajiriH, GostoutCJ, et al.Chemically assisted submucosal injection facilitates endoscopic submucosal dissection of gastric neoplasms. Endoscopy2010;42:627. CrossRef

36. SumiyamaK, GostoutCJ, RajanE, et al.Chemically assisted endoscopic mechanical submucosal dissection by using mesna. Gastrointest Endosc2008;67:534. CrossRef

37. KobaraH, MoriH, FujiharaS, et al.Bloc biopsy by using submucosal endoscopy with a mucosal flap method for gastric subepithelial tumor tissue sampling (with video). Gastrointest Endosc2013;77:141. CrossRef

38. GongW, XiongY, ZhiF, et al.Preliminary experience of endoscopic submucosal tunnel dissection for upper gastrointestinal submucosal tumors. Endoscopy2012;44:231. CrossRef

39. XuM‐D, CaiM‐Y, ZhouP‐H, et al.Submucosal tunneling endoscopic resection: a new technique for treating upper GI submucosal tumors originating from the muscularis propria layer (with videos). Gastrointest Endosc2012;75:195. CrossRef

40. Moreira‐PintoJ, FerreiraA, MirandaA, et al.Left atrial appendage ligation with single transthoracic port assistance: a study of survival assessment in a porcine model (with videos). Gastrointest Endosc2012;75:1055. CrossRef