Author Contributions:Study concept and design: Ura, Hayashi, Ohta, and Nishino. Acquisition of data: Ura, Hayashi, Goto, Astejada, Murakami, Nagato, Ohta, Daimon, Takekawa, and Hirata. Analysis and interpretation of data: Ura, Hayashi, Nonaka, Noguchi, and Nishino. Drafting of the manuscript: Ura, Nagato, Ohta, Daimon, Takekawa, Hirata, and Noguchi. Critical revision of the manuscript for important intellectual content: Hayashi, Goto, Astejada, Murakami, Nonaka, and Nishino. Obtained funding: Hayashi and Nishino. Administrative, technical, and material support: Hayashi, Goto, Nonaka, and Noguchi. Study supervision: Daimon, Takekawa, Hirata, and Nonaka.