1. Department of Pharmacology, University of Arizona, Tucson, Arizona, USA.
2. Chemistry and Chemical Biology, Bouve College Health Sciences—Center for Drug Discovery, Northeastern University, Boston, Massachusetts, USA.
3. Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, California, USA.
4. Comprehensive Pain and Addiction Center, University of Arizona, Health Sciences, Tucson, Arizona, USA.