ABSTRACT
A literature review was carried out based on PRISMA® Statement (Preferred Reporting Items for Systematic Reviews and Meta-Analysis).
Searches were conducted in data bases such as Web of Knowledge (which include Current Contents Connect, Derwent Inovation Index, Essential Science Indicators, Journal Citation Reports, Web of Science + Proceedings), Scopus and Academic Search Complete, and scientific journals such as Annual Reviews, EBSCO Electronic Journals Service, Elsevier (ScienceDirect), Springer, Taylor & Francis and Wiley InterScience. Articles from other sources, like references of the articles selected in the first stage of the systematic review, were not excluded.
