Availability of data and materials
The datasets on which the present study is based are not publicly accessible, since the publication of data was not covered in study participants’ informed consent. Potentially sensitive information is collected in the context of the LIFE Child study; therefore, the data protection concept requires that all researchers interested in accessing the data sign a project agreement. Researchers interested in gaining access to the data collected in the LIFE Child study may contact the committee on data use and access (dm@life.uni-leipzig.de, Ms. Yvonne Dietz).