Funding for this research was provided by:
U.S. Department of Veterans Affairs (I01RX001475)
National Institutes of Health (NS094438)
Received: 31 January 2018
Accepted: 2 April 2018
First Online: 11 April 2018
: All animal experiments were approved by the VA Palo Alto Animal Care and Use Committee. Skin biopsies from patients were harvested after review by the IRB of the Rhineland – Palatinate medical association (837.050.04 (4208)). Informed consent forms were obtained.
: Not applicable.
: None of the authors have competing interests to declare.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.