About the Authors

Mitsuaki Ojima

ojima@oita-nhs.ac.jp

Affiliation Department of Environmental Health Science, Oita University of Nursing and Health Sciences, 2944-9 Megusuno, Oita 840-1201, Japan

Maki Ito

Affiliation Department of Environmental Health Science, Oita University of Nursing and Health Sciences, 2944-9 Megusuno, Oita 840-1201, Japan

Keiji Suzuki

Affiliation Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan

Michiaki Kai

Affiliation Department of Environmental Health Science, Oita University of Nursing and Health Sciences, 2944-9 Megusuno, Oita 840-1201, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MO KS MK. Performed the experiments: MO MI KS. Analyzed the data: MO MI KS MK. Contributed reagents/materials/analysis tools: MO KS MK. Wrote the paper: MO.