1 star - Article planned for future work. No real progress to date <br>
2 stars - Article structure and content is subject to change as data is still being collected <br>
3 stars - Article is written data has been collected but may contain many errors and omissions still needs to be summarised <br>4 stars - Article completed but some facts and citations still need confirming <br>
5 stars - Article completed to the best of our current knowledge <br>