The Mayo Clinic Libraries have produced an excellent summary post about what is and what is not a systematic review:

“I want to do a systematic review”

 

You may also find these slides helpful as a starting point for considering what is involved in a systematic literature review.

http://www.slideshare.net/ilk21/systematic-review-how-to-lent-2013

If you need any help or advice around a systematic review (or a traditional literature review) please get in touch with Isla: ilk21@cam.ac.uk or (01223) 336750