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In April 2017, the FDA held a two day conference on the topic.
The FDA home page for the conference is here (some two dozen decks and full transcripts).
Because it's tedious to download every link individually to your hard drive, I had to do it, and I've put a full zip file of about 30 documents in the cloud as open access, here.
See an open-access 8 page conference report, here.