Funding for this research was provided by:
Susan Thompson Buffett Foundation
National Institute of Child Health and Human Development (5R24-HD042849)
Text and Data Mining valid from 2019-09-03
Received: 19 July 2019
Accepted: 23 August 2019
First Online: 3 September 2019
Ethics approval and consent to participate
: This study was approved by the University of Texas at Austin Institutional Review Board (IRB), protocol number 2014-07-0059. Survey participants gave written consent to participate which was documented electronically with their survey submission. Cognitive interview participants gave verbal consent to participate to minimize written linkage between their name and the subject-matter of the interviews, which was approved by the IRB. Interviewers documented verbal consent with their own signature and date for each interviewee that gave verbal consent.
: Not applicable.
: The authors declare that they have no competing interests.