After his death, testing of 20 medical marijuana samples from across the state found the vast majority were contaminated with dangerous bacteria and fungi.
Links
[1] http://www.cbsnews.com/news/contaminated-medical-marijuana-pot-believed-to-have-killed-cancer-patient/
[2] http://rethinkpot.org/tags/contaminated
[3] http://rethinkpot.org/tags/death
[4] http://rethinkpot.org/tags/cancer