Author Contributions: Dr Smith had full access
to all of the data in the study and takes responsibility for the integrity
of the data and the accuracy of the data analysis.
Study concept and design: Smith, Crossley,
Acquisition of data: Crossley, Aitken, Cameron,
Analysis and interpretation of data: Smith,
Drafting of the manuscript: Smith.
Critical revision of the manuscript for important
intellectual content: Smith, Crossley, Aitken, Pell, Cameron, Connor,
Statistical analysis: Smith, Crossley.
Obtained funding: Smith, Aitken, Pell, Cameron,
Administrative, technical, or material support:
Smith, Crossley, Aitken, Connor, Dobbie.
Study supervision: Smith, Aitken.
Funding/Support: The record linkage was funded
by the Foundation for the Study of Infant Deaths. The CUBS study was funded
by the Chief Scientist’s Office of the Scottish NHS Executive and the
Fetal Medicine Foundation.
Role of Sponsor: None of the funding bodies
influenced the design or conduct of the study; the collection, management,
analysis, or interpretation of the data; or the preparation, review, or approval
of the manuscript.