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The forest plot of estimates of DOR for NBI (A), HAL (C) and 5-ALA (E) in lesion level and estimates of DOR for NBI (B), HAL (D) and 5-ALA (F) in patient level. 5-ALA, 5-aminolevulinic acid; DOR, diagnostic OR; HAL, hexaminolevulinic acid; NBI, narrow band imaging.
