Data sharing
The individual participant data and data dictionary that underlie the results reported in this Article will be shared after de-identification (ie, text, tables, figures, and appendices). Anonymised individual participant data, the data dictionary, and other supporting clinical documents (eg, study protocol and questionnaires) will be made available with publication to collaborators at local or international universities or research institutes. Proposals for request to collaborate and data access should be directed to BJC (