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Archived Comments for: Circular instead of hierarchical: methodological principles for the evaluation of complex interventions

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  1. Competing Interests?

    William Anderson, None

    31 May 2011

    I wonder if it is correct for the authors to state they have no competing interests given the strong association with Complementary and Alternative Medicine

    Competing interests

    A desire to establish the most effective interventions to offer patients in distress.