The following letter was sent to IntraFish by Tony Pitcher, co-author of the scientific paper "Estimates of illegal and unreported seafood imports to Japan, in response to the opinion column "A retraction is not enough" published recently

Your editorial has a number of inaccuracies, and I hope you will reconsider your descriptions of these parts of the work.

1. The 2 percent IUU figure is as the product leaves the US. Because of product mixing in Chinese (and probably North Vietnamese) processing factories, the figure in the product chain as it enters the Japanese market rises to the higher percentage we gave in the original paper.