Funding for this research was provided by:
Research Institute of Science and Technology for Society (19592580)
Juntendo Institute of Mental Health (H26)
Text and Data Mining valid from 2019-03-29
Received: 3 November 2018
Accepted: 11 March 2019
First Online: 29 March 2019
Compliance with ethical standards
: All authors declares that he/she has no conflict of interest.
: Patients were informed that participation was voluntary and that survey respondents would remain anonymous, by written and oral explanation. They were also informed that they would not be disadvantaged in any way if they refused to participate. All the participants consented to the review of their medical records. Patients who signed the consent form and returned a completed questionnaire were considered to have agreed to participate in the survey. The study was reviewed and approved by the Ethical Committees of Saitama Prefectural University and Cancer Institute Hospital (No. 190045 and 2007-1072). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.