::: The results are stated to be of "reported health symptoms" (you cannot really get otherwise from a phone survey). Our best MEDRS sources (e.g. PMID 24119661) say the health effects of fracking are generally unknown, as was discussed at WT:MED. So this is mis-using a primary source, which states its own findings may only be used to form hypotheses, to push a view on Wikipedia at odds with the generally accepted one in the best sources - which is not neutral.  ||