Data Search:
The studies were searched in Cochrane Library, PubMed/MEDLINE, SCOPUS, EMBASE databases. Six hundred eighty-four articles were searched, out of which 230 were excluded because they were either duplicated or book chapters. The full article found in the database was 82, out of which the authors removed 73 articles. The reasons for eliminating these articles are mentioned in Table 1. The articles included in meta-synthesis were 11. Articles of the past five years were considered, that is, from 2014 to 2019.