Article History
Received: 30 October 2019
Accepted: 29 January 2020
First Online: 3 February 2020
Ethics approval and consent to participate
: All study participants gave consent to participate in research, or consent was provided by guardians/parents for the child’s participation. The study was reviewed and approved by the Virginia Tech IRB, IRB #13–196.
: All participants gave consent for the use of the data in publications.
: The authors declare that they have no competing interests.