- Correspondence to Dr Mary A Ott, Section of Adolescent Medicine, Department of Pediatrics, Indiana University School of Medicine, 410 West 10th Street, HS 1001, Indianapolis, IN 46202, USA;
- An earlier version of this analysis was presented at the Society for Adolescent Medicine National Meeting, Seattle, WA, 26 March 2011.
- Received May 24, 2012
- Revised November 26, 2012
- Accepted December 13, 2012
- First published January 25, 2013.
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