Garrido, MónicaLima, OlindaMaia, Luís2021-12-062021-12-062020Garrido M, Lima O, Maia L. A Bloody Polyp in the Sigmoid Colon. Gastroenterology. 2020;159(2):e1-e2. doi:10.1053/j.gastro.2020.01.0160016-50851528-0012http://hdl.handle.net/10400.16/2633engA Bloody Polyp in the Sigmoid Colonjournal article10.1053/j.gastro.2020.01.016