Funding for this research was provided by:
European Social Fund (ESF/14-BM-A55-0018/18 - 0023/18)
Received: 18 July 2019
Accepted: 10 September 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: The study procedure is developed in accordance with the Declaration of Helsinki and has been approved by the Ethics Commission of the University Medicine Greifswald (BB 012/19). Women included in the study give written informed consent following comprehensive oral and written information about the study. For the participation of the child, all legal guardians give written informed consent. If a woman withdraws the given consent at any stages of the study, all data are removed, excluding data published before the withdraw.
: Not applicable.
: The authors declare that they have no competing interests.