1. Department of Radiological Sciences, Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Toyama; Japan
2. Department of Urology, Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Toyama; Japan
3. Department of Public Health, Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Toyama; Japan
4. School of Allied Health Sciences; Kitasato University; Sagamihara; Japan
5. Proton Medical Research Group, Research and Development Department; the Wakasa Wan Energy Research Center; Tsuruga; Japan
6. Biology Group, Research and Development Department; the Wakasa Wan Energy Research Center; Tsuruga; Japan
7. Department of Molecular Neuroscience, Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Toyama; Japan
8. Department of Anatomy, School of Medicine; Fukuoka University; Fukuoka; Japan