Author contributions
SK designed the research study, collected and analyzed the data, wrote the first draft of the manuscript.
SD collected the data and critically revised the manuscript.
PP collected infection data and critically revised the manuscript.
SH analyzed, interpreted the data and critically revised the manuscript.
DA interpreted the data and critically revised the manuscript.
All authors verified and approved the final version of the manuscript.
Disclosure statement
None of the authors have any conflicts of interest to declare.
Data availability statement
Raw data were generated at Hull University Teaching Hospitals NHS Trust. Derived data supporting the findings of this study are available from the corresponding author on request.