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Smartphone apps to improve fitness and increase physical activity among young people: protocol of the Apps for IMproving FITness (AIMFIT) randomized controlled trial

Crossref DOI link: https://doi.org/10.1186/s12889-015-1968-y

Published Online: 2015-07-11

Published Print: 2015-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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