The following information is missing from the Funding section: e:Kid from the Federal Ministry of Education and Research (BMBF). The correct funding information is as follows: The work was supported by the grants Transregio 52 from the German Research Foundation (DFG) and e:Kid from the Federal Ministry of Education and Research (BMBF) to B.S. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.