Authors’ contributions
X.L. and P.D. conceived the idea, designed and supervised the study, had
full access to all data and took responsibility for the integrity of the
data. R.M., Q.Z., H.Z., M.C., M.N., Q.S. were responsible for the
collection the clinical and laboratory data. S.S. and X.L. analysed data
and performed statistical analysis. All authors reviewed and approved
the final version.