About the Authors

David L. Pennington

david.pennington2@va.gov

Affiliations Addiction Research Program, Veterans Administration Medical Center, San Francisco, California, United States of America, Northern California Institute for Research and Education, San Francisco, California, United States of America

Timothy C. Durazzo

Affiliations Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, United States of America, Center for Imaging of Neurodegenerative Diseases, Veterans Administration Medical Center, San Francisco, California, United States of America

Thomas P. Schmidt

Affiliation Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, United States of America

Christoph Abé

Affiliation Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden

Anderson Mon

Affiliation School of Applied Sciences and Statistics, Koforidua Polytechnic, Ghana

Dieter J. Meyerhoff

Affiliations Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, United States of America, Center for Imaging of Neurodegenerative Diseases, Veterans Administration Medical Center, San Francisco, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DJM TCD. Performed the experiments: DLP DJM TCD TPS CA AM. Analyzed the data: DLP. Wrote the paper: DLP DJM TCD.