1. Yokoyama, S. (2015) Actual Situations of Hospice, Palliative Care, and Grief Support in America: Through a Study Tour of Palliative Care in New York. Angel University Bulletin, 15, 55-64. (In Japanese)
2. Family bereavement program (FBP) approach to promoting resilience following the death of a parent
3. Hope Tree (2023) Programs for Children. (In Japanese) https://hope-tree.jp/program/
4. National Cancer Center (2023) Estimate of the Number of Cancer Patients under 18 Years Old and Their Children: Initial Calculation of National Estimated Values, Such as Annual Incidence and Average Age. (In Japanese) https://www.ncc.go.jp/jp/information/pr_release/2015/1104/index.html
5. Senoo, F., Sanpei, M., Matsuura, S. and Hira, S. (2013) Reality of Care for Children with Parents in the Terminal Stage of Cancer and Related Factors. Shimane University Medical Journal, 36, 39-44. (In Japanese)