Funding for this research was provided by:
European Union, European Regional Development Fund, Free State of Saxony
Received: 12 December 2018
Accepted: 18 June 2019
First Online: 1 July 2019
Ethics approval and consent to participate
: The LIFE-Adult-Study was approved by the institutional ethics board of the Medical Faculty of the University of Leipzig. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.