1. Department of Otolaryngology Head and Neck Surgery Kansai Medical University Hirakata Japan
2. Department of Health Administration and Policy Tohoku University School of Medicine Sendai Japan
3. Division of Molecular Epidemiology, Environment and Genome Research Center Tohoku University Graduate School of Medicine Sendai Japan
4. Tohoku Medical Megabank Organization Tohoku University Sendai Japan
5. Department of Pharmaceutical Sciences Tohoku University Hospital Sendai Japan
6. Department of Health Policy and Informatics Tokyo Medical and Dental University Graduate School of Medicine Tokyo Japan