Darrin Carlson's chronic anemia was a telltale sign he might have internal bleeding. Doctors gave him X-rays, a colonoscopy and an endoscopy to try to find the source of his abdominal bleeding -- all ...

PRINCETON, Ill. (AP) -- Rex Hunter of Princeton didn't quite know what to make of the flashing capsule his doctor told him to swallow. He was dealing with blood in his stool and had been through test ...