 I just did read the guidelines and primary sources are not prohibited as long as they are not being used to make a novel conclusion. As you yourself stated, no definitive conclusion has been made so I am not trying to debunk an accepted mainstream theory backed by systematic reviews by using a few primary sources. The science is still in its infancy so one cannot claim there is no physiological response to needle insertion but the reader should be introduced to the fact that scientists are trying to understand acupuncture and that there are some interesting findings in recent years. This does not violate MEDRS.  