Ziva D Cooper1,2, Bryon Adinoff3. 1. UCLA Cannabis Research Initiative, Jane and Terry Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Science, University of California, Los Angeles, CA, USA. 2. Department of Psychiatry, Columbia University Medical Center and New York State Psychiatric Institute, New York, NY, USA. 3. Department of Psychiatry, University of Colorado School of Medicine, Denver, CO, USA.