About the Authors
- Joel G. Ray
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* E-mail: rayj@smh.ca
Affiliation Departments of Medicine and Obstetrics and Gynecology, St. Michael's Hospital and the Institute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada
- Donald A. Redelmeier
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Affiliation Department of Medicine and Health Policy Management and Evaluation, Institute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada
- Marcelo L. Urquia
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Affiliation Centre for Research on Inner City Health, St. Michael's Hospital, Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
- Astrid Guttmann
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Affiliation Departments of Paediatrics and Health Policy, Management and Evaluation, The Hospital for Sick Children, Institute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada
- Sarah D. McDonald
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Affiliation Departments of Obstetrics & Gynecology, Diagnostic Imaging and Clinical Epidemiology and Biostatistics Division of Maternal-Fetal Medicine, McMaster University, Hamilton, Ontario, Canada
- Marian J. Vermeulen
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Affiliation Institute for Clinical Evaluative Sciences, University of Toronto, Toronto, Ontario, Canada
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: JGR DAR MLU MJV. Performed the experiments: JGR MJV. Analyzed the data: JGR DAR MLU MJV. Contributed reagents/materials/analysis tools: JGR MJV. Contributed to the writing of the manuscript: JGR DAR MLU AG SDM MJV.