[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/images/10/05/art.autism.generic.cnn.jpg caption="Children at the Marcus Autism Center in Atlanta, Georgia, receive instruction on March 5, 2009."] (CNN) – A study published Monday in the journal Pediatrics indicates about 1 percent of children ages 3 to 17 have autism or a related disorder, an increase over previous estimates. "This is a significant issue that needs … Continue reading Study: More cases of autism in U.S. kids than previously realized