Funding for this research was provided by:
National Multiple Sclerosis Society (FG-1507-05262)
U.S. Department of Health & Human Services | NIH | National Cancer Institute (R01CA154683)
U.S. Department of Health & Human Services | NIH | National Institute of Neurological Disorders and Stroke (R01 052738-10, R37 NS042925-14, R01 NS052738-10)
Received: 1 March 2017
Accepted: 1 June 2018
First Online: 19 July 2018
: The authors declare no competing interests.