Relevant stuff have been understood having fun with a multi-step evaluation procedure that on it a couple independent writers (CSD and you will LT) at every step. For the Step one, headings was indeed screened getting value. When you look at the Second step, brand new abstracts of the kept stuff was basically screened. The final step of evaluation processes with it examination the full text of all the articles one passed Steps That and two. Documents by which there can be lack of information in the name and abstract to choose relevance was screened for the full-text message evaluation stage. 96.