1School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, New South Wales, Australia
2School of Medicine and Public Health, University of Newcastle, New South Wales, Australia
3Department of Maternity and Gynaecology, John Hunter Hospital, New Lambton Heights, New South Wales, Australia
4New South Wales Health, Pathology North, John Hunter Hospital, New Lambton Heights, New South Wales, Australia
Reprint requests to: Tania Day, MD, PhD, Maternity and Gynaecology, John Hunter Hospital, 2 Lookout Rd, New Lambton Heights, NSW 2305 Australia. E-mail: [email protected]
The authors have declared they have no conflicts of interest.
This study was approved by Hunter New England Research Ethics and Governance unit (HREC 15/11/18/5.02).