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Archived Comments for: Statistical hypothesis testing of factor loading in principal component analysis and its application to metabolite set enrichment analysis

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  1. Correction in equation (1-6)

    Hiroyuki Yamamoto, Human Metabolome Technologies, Inc.

    21 August 2014

    This comment is to correct an error in equation (1-6) of the paper. I have uploaded an Errata file on my website ( This is a typographical error and does not change the results of the paper. We  apologize for any inconvenience.

    Competing interests

    None declared