I am between the ages of 17-35

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I have not had a tattoo or piercing in the last 3 months

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I have not travelled outside Canada or the U.S. in the last 12 months

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I have not had a cleaning, filling or dental surgery in 72 hours

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I have not been pregnant or had a baby in the last 6 months

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I have not spent 3 months or more cumulatively in the United Kingdom

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I am not taking prescription medications

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I weigh more than 110 lbs

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