Contribution to authorship
L.S. designed the study and acquired the study data. C. Y., and L. S.
designed the analysis; Y. H. performed the statistical analyses; Y. J.,
interpreted the data; Y. J. drafted the manuscript; Y. J., C. Y.,J.M.
and H. G. revised the manuscript; C. Y. and J.M. supervised the data
analysis and interpretation; L.S. and C.Y. had the primary
responsibility for the study final content. All authors critically
reviewed the manuscript and approved the final draft.