1. UCLA Center for Cannabis and Cannabinoids, Jane and Terry Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, California, USA.
2. Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA.
3. VA Greater Los Angeles Healthcare System, Los Angeles, California, USA.
4. Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA.