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Significance of Serum Pepsinogens as a Biomarker for Gastric Cancer and Atrophic Gastritis Screening: A Systematic Review and Meta-Analysis

Fig 1

Flow chart of the included studies.

(a) Flow chart for GC; (b) Flow chart for AG.

Fig 1

doi: https://doi.org/10.1371/journal.pone.0142080.g001