Authors’ contributions
J.Y.W. L. developed the original concept and was accountable throughout for the data collection and quality control aspects of the study. J.Y.W. L., Y.H. Y., P.P.K. K., and R.Y.C. K. drafted the manuscript. P.H. L. commented on the analysis of statistical data. W.T. C., P.M. S., and K.D. H. provided overall comments on the drafts of the manuscript. J.Y.W. L. and Y.H. Y. wrote the final manuscript. All of the authors have read and agreed to the published version of the manuscript.