Author contributions
RECRUITMENT
YCL: Study design, study conduct, patient recruitment, data collection, data analysis and writing up of the first draft of the paper. YQYZ: study conduct, patient recruitment, data collection, data analysis and writing up of the first draft of the paper. CY: study conduct, patient recruitment, data collection, data analysis. QZY: Data analysis. ZMZ: Study design, study conduct, patient recruitment, data collection, data analysis and writing up of the first draft of the paper. Revised and approved the final manuscript: all members of the authorship group.