Ask Dr. Robert Smith Your Questions About Colonoscopy By ABC News Mar. 5, 2008 0 Shares Email Star 0 Shares Email 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. Name: City and State: Phone Number: E-mail Address: Your Question:
