Article History
Received: 26 October 2019
Accepted: 31 August 2020
First Online: 12 September 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: These data were compiled as part of a continuous clinical audit of adverse delivery outcomes. Medical records for individual patients were not accessed during data collection and it was deemed by the institutional research ethics committee that specific ethical approval was not necessary.