Schweitzer, W.
Thali, M.
Aldomar, E.
Ebert, L.
Funding for this research was provided by:
University of Zurich
Article History
First Online: 4 September 2020
Compliance with ethical guidelines
:
: W. Schweitzer, M. Thali, E. Aldomar and L. Ebert declare that they have no competing interests.
: Data use for publication in anonymized form was submitted to and considered by our local ethics committee, that then issued a non-obstet declaration (KEK Zurich, 15-0686).