Las Vegas Sun

August 1, 2014

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In this Feb. 7, 2014 photo, Elizabeth Burger, 4, holds her mother's hand at home in Colorado Springs, Colo. Elizabeth suffers from severe epilepsy and is receiving experimental treatment with a special strain of medical marijuana, which she takes orally as drops of oil.

Brennan Linsley / AP

In this Feb. 7, 2014 photo, Elizabeth Burger, 4, holds her mother's hand at home in Colorado Springs, Colo. Elizabeth suffers from severe epilepsy and is receiving experimental treatment with a special strain of medical marijuana, which she takes orally as drops of oil.