1. Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036‑8564, Japan
2. Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan
3. Department of Molecular Biosciences, The Wenner‑Gren Institute, Stockholm University, Stockholm, Stockholm SE‑10691, Sweden
4. Department of Radiology, Aomori Rosai Hospital, Hachinohe, Aomori 031‑0822, Japan