Author Contributions: Dr Hyo had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Hyo, Kawata, Kadoyama, Eguchi, Kubota, Takenaka, and Urade. Acquisition of data: Hyo. Analysis and interpretation of data: Hyo, Kawata, and Urade. Drafting of the manuscript: Hyo and Eguchi. Critical revision of the manuscript for important intellectual content: Hyo, Kawata, Kadoyama, Kubota, Takenaka, and Urade. Statistical analysis: Hyo, Kawata, and Eguchi. Obtained funding: Hyo, Kawata, Kadoyama, and Urade. Administrative, technical, and material support: Kawata, Kadoyama, Kubota, and Urade. Study supervision: Kubota, Takenaka, and Urade.