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. 2019 Apr 3;13:475–490. doi: 10.2147/PPA.S192735

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© 2019 Altice et al. This work is published and licensed by Dove Medical Press Limited

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PRISMA diagram.

Note: ^aTwo identified studies were relevant for all three objectives.⁵,³²

Abbreviation: PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses.