If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
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3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.
I've found this: http://www.ncbi.nlm.nih.gov/pubmed/25483329
Well, it's behind the paywall, but even the abstract is pretty clear that there are no results (aka no evidence). The paper seems to want to "discuss future research directions".