- Correspondence to Professor Lars Bo Andersen, Department of Exercise Epidemiology, Center of Research in Childhood Health, University of Southern Denmark, Campusvej 55, Odense 5230, Denmark;
- Accepted April 20, 2013
- First published May 18, 2013.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.