Funding for this research was provided by:
National Institute of Child Health and Human Development (HD039367)
Article History
Received: 23 March 2016
Accepted: 19 May 2016
First Online: 14 June 2016
Conflict of interest
: The authors report no conflict of interests.
: The study was conducted in compliance with ethical standards. All procedures performed in this study involving human participants were in accordance with the ethical standards of the American Psychological Association and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All procedures of the study including data collection and analyses were approved by the Institutional Review Board of Texas A&M University to ensure the proper protection of human subjects.
: Informed consent was obtained by the first author from all individual participants included in the study.