When you start to see the same books and articles over and over again in your search results and in reference lists, you have done your due diligence and can consider your lit review complete. That isn't to say an article or book might not slip through, but if you have done the steps below, then the chances of something really important slipping past you is pretty slim.
00:02:25 minutes Forward Citation Searching PubMed and Google Scholar
Test your knowledge by completing the