Received: 13 November 2018
Accepted: 13 August 2019
First Online: 27 August 2019
Ethics approval and consent to participate
: The use of NSG mice in this experiment was approved by the UNMC IACUC (Protocol#: 13–050-00-Fc).
: The co-corresponding authors established consent for publication from co-authors.
: The authors declare that they have no competing interests.