This week, hosts Mark Masselli and Margaret Flinter speak with Dr. Sue Sisley, internist, psychiatrist and President of the Scottsdale Research Institute which is conducting the nation's only FDA-approved study on the efficacy of whole plant marijuana for treatment of PTSD. She discusses her ten-year quest to complete a randomized control trial on the use of cannabis as a potentially effective approach, and restrictions that pose a challenge to expansive scientific research.