About the Authors

Petra E. Verburg

Affiliations Robinson Research Institute, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia, Department of Obstetrics and Gynaecology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands, Epidemiology Branch, SA Health, Adelaide, South Australia, Australia

Graeme Tucker

Affiliations Epidemiology Branch, SA Health, Adelaide, South Australia, Australia, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia

Wendy Scheil

Affiliations Epidemiology Branch, SA Health, Adelaide, South Australia, Australia, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia

Jan Jaap H. M. Erwich

Affiliation Department of Obstetrics and Gynaecology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

Gus A. Dekker

Affiliations Robinson Research Institute, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia, Department of Obstetrics and Gynaecology, Lyell McEwin Hospital, Elizabeth Vale, South Australia, Australia

Claire Trelford Roberts

claire.roberts@adelaide.edu.au

Affiliation Robinson Research Institute, School of Medicine, University of Adelaide, Adelaide, South Australia, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PEV GT WS GAD CTR. Analyzed the data: PEV GT. Wrote the paper: PEV GT WS JJHME GAD CTR.