Occult gastrointestinal bleeding.
Caride
V J
VJ
D004912:Erythrocytes / Q000000981:diagnostic imaging*; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D009780:Occult Blood; D011877:Radionuclide Imaging; D013667:Technetium
D013667:Technetium