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. 2017 Aug 21;7(8):e015700. doi: 10.1136/bmjopen-2016-015700

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Recruitment algorithm (*died (8), moved away (5), foster care (2), language barrier (2)). Recruited cases were from 2010 (n=25), 2011 (n=39), 2012 (n=22) and 2013 (n=11).