In this Feb. 7, 2014 photo, Aileen Burger sits on her couch near her four-year-old daughter Elizabeth, left, who suffers from severe epilepsy and is
In this Feb. 7, 2014 photo, Aileen Burger sits on her couch near her four-year-old daughter Elizabeth, left, who suffers from severe epilepsy and is receiving experimental treatment with a special strain of medical marijuana, which she takes orally as drops of oil, at home in Colorado Springs, Colo. After years of nearly losing their daughter while trying and failing with dozens of mainstream treatments, Burger and her husband moved from the east coast to Colorado, where they say they have had luck with Charlotte's Web, a proprietary strain of marijuana in which the psychoactive THC has been largely bred out, and the other cannabinoid compounds thought to be medically useful accentuated. ((AP Photo/Brennan Linsley))