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History
- Received June 13, 2011
- Accepted March 23, 2012
- Published online July 1, 2012.
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© 2012
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- H-M. Lee, PT, PhD, was a graduate student in the Department of Physical Therapy, University of Delaware, Newark, Delaware, at the time this study was conducted.
- J.C. Galloway, PT, PhD, Infant Motor Behavior Laboratory, and Biomechanics and Movement Sciences Graduate Program, Departments of Physical Therapy and Psychology, Center for Biomedical Engineering Research, University of Delaware.
- Address all correspondence to Dr Lee at: demo{at}highwire.org.
Preliminary data from this study were presented at PT 2009: Annual Conference and Exposition of the American Physical Therapy Association; June 10–13, 2009; Baltimore, Maryland. Parts of the manuscript were presented at the XVIIth Biennial International Conference on Infant Studies; March 10–14, 2010; Baltimore, Maryland; and the North American Society for the Psychology of Sport and Physical Activity (NASPSPA) Annual Conference; June 10–14, 2010; Tucson, Arizona.
