[Methodological statement on the systematic follow up examination of blood in feces in hospital in-patient departments].
D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D006760:Hospitalization; D006801:Humans; D007414:Intestinal Neoplasms / Q000175:diagnosis*; D008551:Melena / Q000175:diagnosis*; D009780:Occult Blood