Table 1.

Summary of papers returned from the search string.

Deleted—not relevant (from Pubmed)	n = 5
Phase III randomized controlled trial (RCT)	n = 2
Non-randomized controlled trial (from Pubmed)	n = 1
Phase I/II Trial (from Pubmed)	n = 10
Animal studies and in vitro studies (from Pubmed)	n = 18
“Gray” literature
Expert reviews (from Pubmed)	n = 7
Case studies (from Pubmed)	n = 3