Robert F Kennedy was the source for the Salon Piece in footnote 4.
"He had written a much-discussed and much-challenged story for Rolling Stone last year linking childhood vaccines and a rise in autism."
"Nonetheless, perhaps more than any other Kennedy of his generation, he is looked upon as the next potential vessel for Something Bigger. In words, temperament and actions, he conveys a frenetic vibe of restlessness that invites the questions "What else?" "What next?" "What more?""
http://www.nytimes.com/2006/06/25/fashion/25bobby.html?pagew...
Its this kind of stuff that is ultimately problematic. Note that this is in the 'fashion' section of the NYT.
You could say that 'Salon' is outide your definition of mainstream media, but the issue is that the sites you mentioned still cover the stories, even if nothing more than as references in pursuit of 'journalistic integrity'.
Obviously google will turn up lots of materiel on this if you want it.
(Note that the current treatment of these topics is far more skeptical. The LA times in 2015 is not going to treat these topics the same as the NY times in 2006.)