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3rd grader raises more than $800,000 for rare disease with 'Chocolate Bar' book

When his best friend was diagnosed with a glycogen storage disease, third-grader Dylan Siegel decided to do something to help those suffering from the rare disorder. NBC’s Kate Snow reports.

When his best friend was diagnosed with a glycogen storage disease, third-grader Dylan Siegel decided to do something to help those suffering from the rare disorder. NBC’s Kate Snow reports.