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\bibitem{Currie_etal2012} Currie, C., Zanotti, C., Morgan, A., Currie, D., de Looze, M., Roberts, C., et al. (2012). \textit{Social determinants of health and well-being among young people : health behaviour in school-aged children (HBSC) study : international report from the 2009/2010 survey : key findings}. Copenhagen: WHO Regional Office for Europe.

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