Funding for this research was provided by:
National Center for Chronic Disease Prevention and Health Promotion (U58DP005869)
Article History
Received: 23 September 2019
Accepted: 27 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Ann & Robert H. Lurie Children’s Hospital of Chicago. Informed consent for the SOFIT observation was waived by the review board. Informed consent was not obtained for the SOFIT observation.
: Not applicable.
: The authors declare that they have no competing interests.