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Network meta-analysis for recurrence and progression rates. a The recurrence rate of cancers resected using 5-ALA-based PDD was lower than that of those cancers resected using HAL-based PDD and was not significantly different from those resected using NBI. The use of 5-ALA-based PDD, HAL-based PDD, and NBI all resulted in a lower recurrence rate than WLC. b No difference in progression rate was observed between cancers resected by all methods investigated
