title: Editorial: Occult bleeding, anaemia and angina pectoris.
mesh_terms: D000740:Anemia / Q000150:complications* / Q000209:etiology; D000787:Angina Pectoris / Q000209:etiology*; D006471:Gastrointestinal Hemorrhage / Q000150:complications*; D006801:Humans; D009780:Occult Blood