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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Funnel plots for the outcomes of this meta-analysis adjusted by Trim and Fill approach. (A) Histological improvement to normal or CIN 1, (B) Vaccine efficacy for complete resolution, (C) DNA clearance, (D) HPV-T cell responses after vaccination.