Contribution to authorship:
Study concept and design: Razaz, Joseph, Fahey, Allen
Acquisition of data: Allen, Fahey
Drafting of the manuscript: Razaz
Critical revision of the manuscript for important intellectual content: Razaz, Joseph, Fahey, Allen
Statistical analysis: John
Obtained funding: Razaz, Joseph
Details of Ethics Approval: The Reproductive Care Program of Nova Scotia and the Research Ethics Board of the IWK Health Centre provided data access and ethics approval, respectively.