1. Department of Palliative Medicine, Seirei Hamamatsu General Hospital, Hamamatsu, Japan
2. Breast and Medical Oncology Division, National Cancer Center Hospital, Chuo-ku, Japan
3. Psycho-Oncology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Japan
4. Hepatobiliary and Pancreatic Oncology Division, National Cancer Center Hospital, Chuo-ku, Japan
5. Center for Cancer Control and Information Services, National Cancer Center Hospital, Chuo-ku, Japan
6. Palliative and Supportive Care Division, Seirei Mikatahara General Hospital, Hamamatsu, Japan