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. 2022 Jun 16;12(6):e059652. doi: 10.1136/bmjopen-2021-059652

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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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PRISMA 2020 flow diagram of the systematic literature search. EoL, end-of-life; PC, palliative care; PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses.