Author contributions
WF contributed to the acquisition of study data, and data analysis and interpretation. RHC, BM and ARS contributed to the conception and design of the study, acquisition of study data, and data analysis and interpretation. SEL, ZD and CH contributed to the acquisition of study data. PH, SY and MT contributed to data analysis and interpretation. AT was responsible for developing the psychometric analysis plan and contributed to data analysis and interpretation. VL contributed to the conception and design of the study. All authors were involved in development of all stages of the manuscript, revising it critically for important intellectual content. All authors provided final approval of the version submitted for publication. All authors are accountable for the accuracy and integrity of the work. All authors read and approved the final manuscript.