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The PRISMA flow diagram of literature selection. A total of 511 articles were retrieved from the searched data bases and other sources. After removing the duplicates, 398 were screened by title then 382 were removed. Accordingly, 7 were removed by abstract and 5 by full text with justification. Finally, 4 studies met our inclusion criterion for analysis in this review. Un*: Undetermined. The x-axis of the figure indicates the HPV types
