- Correspondence to Lutz Goldbeck, Department of Child and Adolescent Psychiatry/Psychotherapy, Medical Centre, University of Ulm, Krankenhausweg 3, 89075 Ulm, Germany;
- Received 14 May 2015
- Revised 29 May 2015
- Accepted 31 May 2015
- Published online 19 June 2015.
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