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Authors' correction

Posted by DickTelford on 07 Dec 2012 at 20:30 GMT

approximately the square root of average number of steps per day
http://plosone.org/article/info:doi/10.1371/journal.pone.0050014#pone-0050014-g002

The units for total energy intake should be "average number of kilojoules per day"

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