http://pediatrics.aappublications.org/content/early/2014/06/26/peds.2014-1079.full.pdf+html

That's the link to the actual study. It's a literature review and therefor costs are relatively small.

On page 13, in the financial disclosures section it says "The authors have indicated they have no financial relationships relevant to this article to disclose." Now, the tards will have you believe that this is some grand conspiracy and that if they don't have to disclose it they don't have to. This is true, somewhat, but a reputable journal like Pediatrics wouldn't allow it.

ETA: Correction to the title: the study was paid for by the Agency for Health Research and Quality, US Department of Health and Human Services. It was not paid for by "big pharma."