Funding for this research was provided by:
National Institute of Allergy and Infectious Diseases (BAA 26620050030)
National Institute on Aging (P30AG028716)
Text and Data Mining valid from 2018-08-31
Received: 19 June 2018
Accepted: 21 August 2018
First Online: 31 August 2018
Ethics approval and consent to participate
: All volunteers signed informed consent and study received approval from the Institutional Review Board of the Duke University School of Medicine, North Carolina, USA.
: Not applicable.
: The authors declare that they have no competing interests.
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