Author contributions
Dr Fitzgerald is the lead author and devised the concept and design,
created the database, analysed, and interpreted the data, and drafted
and revised the paper. Professor Scalia was involved in the design,
drafting and revision and created some of the complex graphics utilised.
Ms Logan, Ms Weldon and Ms Kwon had roles in perfecting the design,
collecting, analysing and interpreting the data and in the manuscript
revision. Dr Scalia was involved in collection, analysis, and
interpretation of the data, and in drafting and revising the document.
All authors have reviewed and approved the manuscript.