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Ise E, Schulte-Körne G.Ise E, et al.Z Kinder Jugendpsychiatr Psychother. 2013 Jul;41(4):271-80, quiz 281-2. doi: 10.1024/1422-4917/a000241.Z Kinder Jugendpsychiatr Psychother. 2013.PMID: 23782565Review.German.