Funding for this research was provided by:
Universitair Medisch Centrum Groningen (754510)
Text and Data Mining valid from 2019-08-06
Received: 26 April 2019
Revised: 17 July 2019
Accepted: 26 July 2019
First Online: 6 August 2019
Compliance with ethical standards
: The Department of OBGYN of the UMCG received an unrestricted educational grant from Ferring Pharmaceutical Company, The Netherlands.
: The study was approved by the ethics committee of the UMCG.
: Informed consent was obtained from all individual participants included in the study.
: The funders did not play a role in study design, collection and interpretation of data nor writing of the report.