Funding for this research was provided by:
National Institutes of Health (R01 CA181745, U01CA140204)
Received: 27 March 2018
Accepted: 31 May 2018
First Online: 15 June 2018
Ethics approval and consent to participate
: This retrospective study was approved by the Washington University Institutional Review Board with a waiver of consent.
: Richard L. Wahl reports receiving travel support from Siemens and GE, consulting agreements with Nihon Medi-Physics and Clarity Pharmaceuticals, and a research contract with White Rabbit AI. The other authors declare that they have no competing interests.
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