1 Division of Health Care Research, Behavioral Science and Survivorship Research Group, Center for Public Health Sciences, National Cancer Center Japan, Tokyo, Japan.
2 Clinical Psychology Course, Department of Psycho-Social Studies, School of Arts and Letters, Meiji University, Tokyo, Japan.
3 School of Distance Learning, Department of Human Sciences, Musashino University, Tokyo, Japan.
4 Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
5 Department of Neuropsychiatry, Sapporo Medical University Graduate School of Medicine, Sapporo, Japan.
6 Innovation Center for Supportive, Palliative and Psychosocial Care, National Cancer Center Hospital, Tokyo, Japan.