1. Faculty of Nursing and Medical Care, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
2. St. Luke’s College of Nursing, Tokyo 104-0044, Japan
3. School of Nursing, Hyogo University of Health Sciences, Hyogo 650-8530, Japan
4. Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, The University of Texas, Houston, TX 77030, USA
5. School of Medicine, Showa University, Tokyo 142-8555, Japan
6. Department of Breast Medical Oncology, MD Anderson Cancer Center, The University of Texas, Houston, TX 77030, USA