Funding for this research was provided by:
Maternal and Child Health Bureau (UA6MC19010)
Received: 27 November 2017
Accepted: 4 June 2018
First Online: 18 June 2018
: The authors declare that they have no competing interests.
: The research was reviewed on 12/29/2015 and determined to meet the criteria for EXEMPTION by the Geisinger Institutional Review Board (IRB# 2015–0454) as defined in the U. S. Department of Health and Human Services Regulations for the Protection of Human Subjects [(45 CFR 46.101(b)]. The specific exemption category under 45 CFR 46.101(b) is:Category 4: Existing data/specimens, publicly available, unlinkable to individuals.
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