Linz, Christian
Schweitzer, Tilmann
Brenner, Lisa C.
Kunz, Felix
Meyer-Marcotty, Philipp
Wermke, Kathleen
Funding for this research was provided by:
IZKF (F-164, F-164, F-164, F-164)
Article History
Received: 14 July 2017
Accepted: 14 August 2017
First Online: 5 September 2017
Compliance with ethical standards
: The study was approved by the local research ethics committee (143/09). All the parents gave their informed consent to this longitudinal research and to the publication of the results.
: The authors have no financial relationships relevant to this article to disclose.
: The authors declare that they have no conflict of interest.