Ask Dr. Robert Smith Your Questions About Colonoscopy

Dr. Smith will answer your questions about colonoscopy and colon cancer.

ByABC News
February 09, 2009, 11:14 AM

Mar. 5, 2008— -- Do you have questions about colonoscopy or colon cancer? Dr. Robert Smith is the director of screening for the American Cancer Society and co-author of today's report. Submit your question to Dr. Smith below.

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