Authors’ contributions
H.M. conceptualized and designed the study, analyzed the data, and drafted the initial manuscript. K.H., H.I., and H.K. contributed to the data analysis and interpretation and assisted in the preparation of the manuscript, giving critical advice. H.G. and T.M. gave advice on the data analysis. A.S. and Y.O. collected the data. K.F., H.N., S.Y., M.H., and the JECS group reviewed the manuscript and gave critical advice. All of the authors discussed the results and contributed to the final manuscript. All of the authors read and approved the final manuscript.