title: The gut: esophagus, stomach, and rectum.
authors.affiliation: Clinica Reina Sofia, Bogota, Colombia.
authors.forename: Luis Carlos
authors.initials: LC
authors.lastname: Sabbagh
mesh_terms: D019160:Endosonography / Q000379:methods*; D004947:Esophagus / Q000000981:diagnostic imaging*; D006801:Humans; D012007:Rectum / Q000000981:diagnostic imaging*; D013270:Stomach / Q000000981:diagnostic imaging*