Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01EO1501)
Text and Data Mining valid from 2019-05-17
Received: 25 July 2018
Accepted: 3 May 2019
First Online: 17 May 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the University of Leipzig, Germany (reg. no. 264-10-19042010). Informed written consent was obtained from all pregnant women.
: The authors declare that they have no competing interests.
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