?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Hallal%2C+PC&rft.aufirst=PC&rft.aulast=Hallal&rft.pages=-&rft.issn=1932-6203&rft.date=4+November+2013&rft.volume=8&rft.issue=11&rft.atitle=Energy+expenditure+compared+to+physical+activity+measured+by+accelerometry+and+self-report+in+adolescents%3A+a+validation+study&rft.title=PLoS+One&rft.genre=article