I have your proposal attached with my comments and edits.  
1.  Are you going to include children and adults in your review?   I would suggest to keep the participants to adults.
2.  Are you adding research since 2013?  That was 5 years ago and much has happened it the area of research on the ketogenic diet since 2013.
Let me know your thoughts.  Best, Kathy Isoldi

 How soon could u revise and update this with new peer review articles that exclude children .
Focus will be on adults.
Articles should be 2014- present
Apa style only