Funding for this research was provided by:
National Institutes of Health (1R01CA169365, 1R01EB021336, T32CA009206, T32GM008505, S10-OD018505)
National Cancer Institute (P30CA014520)
American Cancer Society (125246-RSG-13-099-01-CCE)
National Science Foundation of China (81401465, 51573096)
Received: 17 January 2017
Accepted: 21 February 2017
First Online: 6 March 2017
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.