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. Author manuscript; available in PMC: 2021 Jul 12.
Published in final edited form as: Vaccine. 2017 Sep 1;35(43):5738–5750. doi: 10.1016/j.vaccine.2017.08.037

Fig. 1.

Fig. 1.

Organizational approach for systematic evidence reviews carried out by the WHO working group. aAll manuscripts were prepared according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines [86].