My takeaway from your comment is that studies like [14] and [15] are very likely poorly done (like another comment describes early studies of acupuncture). In

My takeaway from your comment is that studies like [14] and [15] are very likely poorly done (like another comment describes early studies of acupuncture). In any case, I'd expect that in within a few more years, these sorts of conflicting and controversial results should be further disproven. Thanks.