Search results
A total of 865 records without duplicates were identified using our
search strategy with the aforementioned keywords (309 from Pubmed, 643
from Embase, and 8 from the Cochrane Library database). After the titles
and abstracts were screened, 822 citations were selected for full-text
assessment. Finally, nine cohort studies[18-26] were included in the
analysis. Figure 1 summarizes the number of articles remaining after the
exclusion of non-relevant articles at each stage of the eligibility
assessment.