1. Department of Pharmacology and Toxicology, University of Otago, Dunedin 9054, New Zealand
2. Department of Pharmacology and Clinical Pharmacology, University of Auckland, Auckland 1142, New Zealand
3. Department of Psychiatry and Pharmacology, Columbia University Vagelos College of Physicians and Surgeons, New York, New York 10032, United States
4. Division of Molecular Therapeutics, New York State Psychiatric Institute, New York, New York 10032, United States
5. Lambert Initiative for Cannabinoid Therapeutics, Brain and Mind Centre, University of Sydney, Campterdown, NSW 2050, Australia
6. School of Chemistry, Faculty of Science, University of Sydney, Sydney, NSW 2006, Australia