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X @lizmrao
Contributors EMR is the guarantor of this work. EMR designed and conducted the study, collected and analysed the data, wrote the manuscript and prepared this work for publication. ML contributed to the acquisition of data for this study and provided revisions to the manuscript. SH contributed to the design and conduction of the study, and provided revisions to the manuscript. RLK contributed to the design and conduction of the manuscript, and provided revisions to the manuscript. BTC contributed to the ideation and design of this study, and provided revisions to the manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests SH is an associate editor of RAPM. EMR, ML, RLK and BTC declare no competing interests.
Provenance and peer review Not commissioned; externally peer reviewed.