Study Selection
Our search strategy initially yielded 278 manuscripts (Figure
1 ). After removing 68 duplicates, 210 article titles and abstracts were
screened, and 159 studies were excluded because they did not meet
inclusion criteria. Full text was reviewed for the remaining 52
manuscripts, and 6 studies additional studies excluded for failing to
meet inclusion criteria. A total of 45 studies were included and
reviewed in this study.