:::::::I'm not sure I accept your reasoning, this is not a WP:MEDRS matter. There is nothing to say primary sources cannot be used if the source is reliable, which it appears to be. WP:SCIRS suggests that "primary sources should be used when discussing a particular result...When citing a primary source, be especially mindful of the policy on undue weight...An individual primary source should never be cited or juxtaposed so as to "debunk" or contradict the conclusions of a reliable secondary source...," accordingly, I don't see such an issue mentioning the findings in an appropriate fashion.