1. Department of Disaster Psychiatry, International Research Institute of Disaster Science; Tohoku University; Sendai Japan
2. Miyagi Prefecture Comprehensive Children's Center; Natori Japan
3. Department of Psychiatry, Graduate School of Medicine; Tohoku University; Sendai Japan
4. Division of Biostatistics, Graduate School of Medicine; Tohoku University; Sendai Japan
5. Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization; Tohoku University; Sendai Japan