http://www.huffingtonpost.com/2011/04/18/robert-macneil-returns-to_n_850333.html

http://www.getwellhealth.com/latest-scandal-autism-vaccines-and-a-boy-named-nick/

http://www.pbs.org/newshour/bb/health/jan-june11/autism_04-18.html#disqus_thread

http://imnotarappa.tv/2011/04/robert-macneil-returns-to-pbs-for-autism-series/