Lower gastrointestinal bleeding--Computed Tomographic Angiography, Colonoscopy or both?Published in:World Journal of Emergency Surgery, 2017, v. 11, p. 1, doi. 10.1186/s13017-016-0112-3By:Clerc, Daniel;Grass, Fabian;Schäfer, Markus;Demartines, Nicolas;Hübner, Martin;Denys, AlbanPublication type:Article