Funding for this research was provided by:
National Institute of Environmental Health Sciences (R01ES024790, R01ES024790, R01ES025775, R01ES12014, P30ES019776, R24ES028528,)
National Institute of General Medical Sciences (T32GM008490)
Received: 17 December 2018
Accepted: 30 July 2019
First Online: 23 August 2019
Ethics approval and consent to participate
: Informed consent was obtained from each individual before participation. Study protocols were approved by the Institutional Review Board at Emory University.
: Not applicable
: The authors declare that they have no competing interests.