Discuss the use of glue for hemostasis in gastrointestinal bleed.

Use of glue for hemostasis in endoscopy for gastrointestinal bleed  Need an introduction about use of glue for hemostasis, current use of the glue in different types of gastrointestinal bleeding (it is predominantly used for varices but need to mention all possible gastrointestinal bleeds that it can be used for), future direction and conclusion