Text and Data Mining valid from 2019-01-15
Received: 15 January 2018
Accepted: 28 December 2018
First Online: 15 January 2019
Ethics approval and consent to participate
: The study protocol was approved by the medical ethical committee of the Maastricht University Medical Centre (MUMC) (17–4-0.15.1/ab). All procedures were in accordance with institutional guidelines and adhered to the principles of the Declaration of Helsinki and Title 45, U.S. Code of Federal Regulations, Part 46, Protection of Human Subjects (revised 13 November 2001, effective 13 December 2001). Permission was obtained to access the antenatal ultrasound and labour ward data in two databases. Consent to participate has been waived by the medical ethical committee of the MUMC, because of the retrospective study design.
: Not applicable
: The authors declare that they have no competing interests.
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