Author contributions
J.Y.L. was responsible for the conception and design of the study. J.W.K., B.G.K., S.W.K., H.S.K., C.H.C., M.C.L., N.Y.N., D.S.T., and J.Y.L. enrolled patients and collected the data. B.P. and J.Y.L. were responsible for the methodology. Y.N.K., B.P., and J.Y.L. verified the raw data. Y.N.K., B.P., and J.Y.L. analyzed the data. Y.N.K., B.P., and J.Y.L. participated in the data interpretation and writing of the manuscript. J.W.K., B.G.K., N.Y.N., and D.S.T. were responsible for reviewing and editing of the manuscript.