This article has been corrected to fix the following typos in the PRISMA diagram and article text:
In the Abstract, "The database search yielded 4,221 articles" has been corrected to "The database search yielded 4,215 articles"
In the 'Data Source and Strategy' section, first paragraph, "It yielded 4,221 results initially" has been corrected to "It yielded 4,215 results initially"
In the PRISMA diagram, 'Records screened' and 'Records excluded' have been corrected from 135,627 and 135,608 to 135,623 and 135,603, respectively.
In the Results section, first paragraph, "Nineteen studies consisting of..." has been corrected to "Eighteen studies consisting of..."
No competing interests declared.