1. Department of Community Health Nursing, Division of Health Sciences & Nursing, Graduate School of Medicine The University of Tokyo Tokyo Japan
2. Department of Innovative Public Health Nursing, Graduate School of Medicine Kyoto University Kyoto Japan
3. Department of Statistic and Computer Science, College of Nursing Art and Science University of Hyogo Hyogo Japan
4. Department of Nursing, Division of Healthcare Sciences Chiba Prefectural University of Health Sciences Chiba Japan
5. Department of Medical Statistics, School of Nursing Mejiro University Saitama Japan
6. Faculty of Policy Studies Doshisya University Kyoto Japan