Funding for this research was provided by:
National Institute of Child Health and Human Development (K12 HD055931)
Received: 23 May 2019
Accepted: 7 February 2020
First Online: 22 February 2020
Ethics approval and consent to participate
: This study was approved by the Colorado Multiple Institutional Review Board. As secondary data was used, no consent to participate was required.
: Not applicable.
: The authors declare that they have no competing interests.