Do You Have Questions About Alzheimer's Disease?

Mar. 18, 2007— -- Do you have a question about Alzheimer's disease?

Ask Dr. Ron Petersen, Ph.D., M.D., director of the Mayo Alzheimer's Disease Research Center and professor of neurology at the Mayo Clinic College of Medicine.

Watch "World News with Charles Gibson" TONIGHT at 6:30 p.m. ET for the full report.

Submit your question for Dr. Petersen below.