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. 2019 Jul 2;12:5201–5213. doi: 10.2147/OTT.S204403

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© 2019 Wu et al.

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Flow diagram of the study selection process.

Abbreviations: AST/ALT ratio, aspartate transaminase to alanine transaminase ratio; OS, overall survival; CSS, cancer-specific survival; RFS, recurrence-free survival.