Morgan TG, Carlsson T, Loveday E, Collin N, Collin G, Mezes P, Pullyblank AM.  Needle or knife? The role of interventional radiology in managing uncontrolled gastrointestinal bleeding.  Int J Gastrointest Interv 2021;10:17-22.  https://doi.org/10.18528/ijgii200018