Authors’ contributions
CW and JDT conceived the study. CW, JDT, and PZ designed the study. CW, PZ, and WQ led the implementation of the study. AMW developed the analysis plan. AMW and JJO provided statistical expertise. AMW, JJO, and WQ analysed the data. JDT provided oversight. CW wrote the initial draft of the paper. JDT, AMW, JJO, MSJ, and BY revised the manuscript. All authors read and approved the final manuscript.