Funding for this research was provided by:
National Institutes of Health (R01 NR01039)
First Online: 25 January 2016
Compliance with ethical standards
: Mi Sook Jung, Min Zhang, Mary K. Askren, Marc G. Berman, Scott Peltier, Daniel F. Hayes, Barbara Therrien, Patricia A. Reuter-Lorenz, and Bernadine Cimprich declare that they have no conflicts of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, and the applicable revisions at the time of the investigation. Informed consent was obtained from all participants included in the study.