1. School of Nursing, Sapporo City University, Japan
2. Biostatistics Division, Clinical Research and Medical Innovation Center, Hokkaido University, Japan
3. Department of Breast Oncology, National Hospital Organization Kyushu Cancer Center, Japan
4. Institute of Biomedical Sciences, Nagasaki University, Japan
5. Fukuoka Jo Gakuin Nursing University, Japan
6. Fukuoka Nursing College, Japan