- Correspondence to Dr David T Levy, Department of Oncology, Georgetown University Medical Center, Cancer Prevention & Control Program, Lombardi Comprehensive Cancer Center, 3300 Whitehaven Street NW, Suite 4100, Washington, DC 20007, USA;
- Received August 14, 2016
- Revised November 7, 2016
- Accepted November 16, 2016
- First published December 12, 2016.
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