1. Department of Clinical Psychology, Kurashiki Central Hospital, Kurashiki, Japan
2. Student Services Center, Musashi University, Nerima-ku, Japan
3. Department of Psychiatry, Tokai University School of Medicine, Isehara, Japan
4. Division of Clinical Research Center in Hiroshima, Hiroshima University Hospital, Minami-ku, Japan
5. Department of Palliative Care, Tokai University School of Medicine, Isehara, Japan
6. Department of Hematology, Tokai University School of Medicine, Isehara, Japan
7. Department of Hematology/Oncology, Kurashiki Central Hospital, Kurashiki, Japan