Authors' contributions
Study Concept and Design: N.T., Y.N., H.I., Data Acquisition: N.T., T.S. Y.M., K.W., M.U., T.I., M.K., S.K., N.O., Analysis and Interpretation of Data: N.T., Y.N., H.I., Drafting of the Manuscript: N.T., Critical Revision of the Manuscript: Y.N., H.I., Statistical Analysis: N.T., Y.N., Study Supervision: K.K. Final Approval of the Manuscript: all authors.