Literature Search
We searched for articles in the PubMed (includes Medline), Cochrane
Library, and Clinicaltrials.gov databases up until September 2019. We
also did literature mining from a pertinent systematic review. With
these strategies, a total of 50 articles were retrieved after taking
into account duplicates. After screening these 50 non-duplicate articles
using the inclusion and exclusion criteria, 37 articles were excluded.
The full texts of 13 remaining citations were then reviewed to assess
appropriateness for inclusion in the meta-analysis, where in the
process, 8 articles were excluded. Thus, only 5 citations were finally
included for pooling in the meta-analysis. The PRISMA diagram
summarizing the results of the search strategy is shown inFigure 1 . The characteristics of the 5 studies based on the
following parameters are shown in Table 1 : General Details,
Inclusion Criteria, Exclusion Criteria, Intervention, and Outcomes.