1. Department of Disaster Public Health, International Research Institute of Disaster Science, Tohoku University, Sendai, Japan.
2. Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan.
3. Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.
4. Department of Molecular Epidemiology, Graduate School of Medicine, Tohoku University, Sendai, Japan.
5. Department of Pediatrics, Graduate School of Medicine, Tohoku University, Sendai, Japan.