About the Authors

Kristjana Einarsdóttir

keinarsdottir@ichr.uwa.edu.au

Affiliation Telethon Institute for Child Health Research, Centre for Child Health Research, University of Western Australia, Subiaco, Western Australia, Australia

Fatima A. Haggar

Affiliation Centre for Health Services Research, School of Population Health, University of Western Australia, Crawley, Western Australia, Australia

Sarah Stock

Affiliation School of Women’s and Infant’s Health, University of Western Australia, King Edward Memorial Hospital, Perth, Western Australia, Australia

Anthony S. Gunnell

Affiliation Health and Wellness Institute, Edith Cowan University, Joondalup, Western Australia, Australia

Fiona J. Stanley

Affiliation Telethon Institute for Child Health Research, Centre for Child Health Research, University of Western Australia, Subiaco, Western Australia, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Gave advice on the statistical methods used for analysis and discussed ideas: FAH ASG. Gave obstetric advice: SS. Supervised the work, gave advice and contributed to the paper: FJS. Revised the paper critically for important intellectual content and approved it to be published: KE FAH SS ASG FJS. Conceived and designed the experiments: KE. Performed the experiments: KE. Analyzed the data: KE. Contributed reagents/materials/analysis tools: KE. Wrote the paper: KE.