Funding for this research was provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (K12 HD043494-14)
National Institute of General Medical Sciences (R01GM108494)
Duke School of Nursing Center for Nursing Research
Jean and George Brumley, Jr. Neonatal Perinatal Research Institute
Received: 17 August 2017
Accepted: 18 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: The study was approved by the Duke Institutional Review Board (Pro00045553), and written informed consent was obtained from parents.
: The authors declare that they have no competing interests.
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