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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2007)
Background
Mental health problems are a worldwide public health burden. The literature concerning the mental health benefits from physical activity among adults has grown. Adolescents are less studied, and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2004)
Background
Research on health equity which mainly utilises population-based surveys, may be hampered by serious selection bias due to a considerable number of invitees declining to participate. Sufficient ...