Tracking food purchases to predict dermatological health outcomes

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Rule #1: Fill out all questionnaires truthfully and conscientiously (i.e. take your time to fully comprehend questions and possible answers, to read scenario descriptions, to fill in text fields, etc.).

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Rule #3: Redeem Survey Codes only if you have earned them in compliance with the rules.

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Rule #9: Do not use rule violations by others to your advantage.

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Issue found:
There was no Survey Code at the end of the study.

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