Marshall, Teresa A.
Curtis, Alexandra M.
Cavanaugh, Joseph E.
Warren, John J.
Levy, Steven M.
Article History
Received: 14 January 2021
Revised: 15 April 2021
Accepted: 20 April 2021
First Online: 10 May 2021
Competing interests
: The authors declare no competing interests.
: All components of the IFS and IBDS were approved by the Institutional Review Board at the University of Iowa. Written informed consent was obtained from mothers at the time of their child’s birth and from parents at clinic visits. Written assent was obtained from children beginning at age 13 years.