About the Authors

Andrew W. Horne

andrew.horne@ed.ac.uk

Affiliation MRC Centre for Reproductive Health, University of Edinburgh, Queen's Medical Research Institute, Edinburgh , United Kingdom

Jeremy K. Brown

Affiliation MRC Centre for Reproductive Health, University of Edinburgh, Queen's Medical Research Institute, Edinburgh , United Kingdom

Stephen Tong

Affiliation Translational Obstetrics Group, Mercy Hospital for Women, Heidelberg, Australia

Tu'uhevaha Kaitu'u-Lino

Affiliation Translational Obstetrics Group, Mercy Hospital for Women, Heidelberg, Australia

Competing Interests

AH holds a hold a United Kingdom patent for a diagnostic biomarker for ectopic pregnancy (# 0712801.0). This does not alter the authors' adherence to all PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AWH ST TK. Performed the experiments: JKB. Analyzed the data: AWH JKB. Contributed reagents/materials/analysis tools: AWH ST. Wrote the paper: AWH JKB ST TK.