Text and Data Mining valid from 2018-06-20
First Online: 20 June 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All procedures involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent of legal guardians and voluntary assent of children were obtained prior to children’s involvement in the study and the protocol was approved by the IRBs of the University of North Carolina at Chapel Hill and John Ulmstead State Hospital. Children’s attending psychiatrists gave informed consent, as did teachers.