About the Authors

Jane E. Hirst

jane.hirst@sydney.edu.au

Affiliations Kolling Institute of Medical Research, University of Sydney, Sydney, Australia, Department of Obstetrics & Gynaecology, Royal North Shore Hospital, St Leonards, Australia

Thach S. Tran

Affiliations Hung Vuong Hospital, Ho Chi Minh City, Viet Nam, Australian Research Centre for Health of Women and Babies, University of Adelaide, Adelaide, Australia

My An T. Do

Affiliation Hung Vuong Hospital, Ho Chi Minh City, Viet Nam

Jonathan M. Morris

Affiliations Kolling Institute of Medical Research, University of Sydney, Sydney, Australia, Department of Obstetrics & Gynaecology, Royal North Shore Hospital, St Leonards, Australia

Heather E. Jeffery

Affiliations International Women and Children's Health, Sydney School of Public Health, University of Sydney, Sydney, Australia, Department of Neonatology, Royal Prince Alfred Hospital, Sydney, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JEH TST JMM HEJ. Performed the experiments: JEH TST MAD. Analyzed the data: JEH TST MAD. Wrote the first draft of the manuscript: JEH. Contributed to the writing of the manuscript: TST HEJ JMM. ICMJE criteria for authorship read and met: JEH TST MAD JMM HEJ. Agree with manuscript results and conclusions: JEH TST MAD JMM HEJ.