<http://schema.org/description>
"(HealthDay)\u2014Tests for blood in the stool can consistently detect colon cancer when used on an annual basis, and they are effective even in the second, third and fourth years of screening, a new study says."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2016-01-stool-effective-colon-cancer.html>