Author contributions
Conception and design: S.-Y.L., W.-Z.Z. and Y.-L.W. Provision of study materials and patients: S.-Y.L., S.D., X.-N.Y., R.-Q.L., B.-Y.J., Q.W., X.-S.B., G.-B.Q., Jun-Tao L. Collection and assembly of data: S.-Y.L., H.-H.Y., L.-X.Y, Q.N, H.-Y.T, B.-C.W., J.-J.Y., Q.Z., H.-R.L., K.L., W.W., S.-Y.M.L. Data analysis and interpretation: All authors. Paper writing: S.-Y.L., S.D., X.-N.Y., W.-Z.Z. and Y.-L.W. All authors have read and approved the article.