- Correspondence to Dr Garen J Wintemute, Violence Prevention Research Program, Department of Emergency Medicine, School of Medicine, University of California, Davis 2315 Stockton Blvd, Sacramento, CA 95817 USA;
- Received June 1, 2017
- Revised August 22, 2017
- Accepted August 30, 2017
- First published October 6, 2017.
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