Institutional Review Board Statement
This study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the ethics committee of the International University of Health and Welfare Hospital (Otawara, Tochigi, Japan) (approval code: 13-B-263), as well as the Jikei University School of Medicine (Nishi-Shimbashi, Tokyo, Japan) (approval code: 21-216 [6094]).