Author contributions
Z.J.X. designed the research, was the principal investigator, and took primary responsibility for the paper; S.Q.Q., Y.J.J., H.J.W., X.F.A., and Z.J.X. acquired the data, analyzed and interpreted the data, performed statistical analysis and drafted the article; S.Q.Q., Z.F.X, T.J.Q., L.J.P., B.L., and Z.J.X. recruited the patients; Z.J.X., G.H. and R.P.G. prepared the typescript.
Disclosure statement
No potential conflict of interest was reported by the author(s).