Opioid Systems and Depression: The Relationship Is Strengthening

Affiliations

• ¹ Shirley and Stefan Hatos Center for Neuropharmacology, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles, California.
• ² Shirley and Stefan Hatos Center for Neuropharmacology, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles, California. Electronic address: cevans@ucla.edu.