Funding for this research was provided by:
National Institutes of Health (U01 NS091272, R01 ES016873, U01 NS082137, ES019277)
Received: 24 August 2017
Accepted: 24 August 2017
First Online: 13 September 2017
Ethics approval and consent to participate
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed, and all procedures were approved by the Institutional Animal Care and Use Committees at the University of Washington or the VA Puget Sound Health Care Center. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Approval was granted by the Institutional Review Board at Peking University Health Science Center, and all subjects were fully informed and consented to the study.
: The authors declare that they have no competing interests.
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