- Correspondence to Dr H. Rex Gaskins, University of Illinois at Urbana-Champaign, 1206 W. Gregory Drive, Urbana, IL 61801, USA; OR Dr Nathan A Ellis, University of Arizona Cancer Center, 1515 N Campbell Ave, Tucson, AZ 85724, USA;
- Received 8 November 2016
- Revised 21 December 2016
- Accepted 4 January 2017
- Published online 2 February 2017.
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