Harada, Ryoko
Ishikura, Kenji
Shinozuka, Shunsuke
Mikami, Naoaki
Hamada, Riku
Hataya, Hiroshi
Morikawa, Yoshihiko
Omori, Tae
Takahashi, Hirotaka
Hamasaki, Yuko
Kaneko, Tetsuji
Iijima, Kazumoto
Honda, Masataka
Article History
Received: 15 May 2017
Accepted: 20 January 2018
First Online: 6 February 2018
Compliance with ethical standards
:
: Kazumoto Iijima has received grants from Daiichi Sankyo Co. Ltd.
: All of the researchers in this study complied with the Helsinki Declaration and the Ethical Guidelines for Epidemiological Studies issued by the Ministry of Health, Labour and Welfare of Japan. With regard to informed consent, explanatory documents were attached to each questionnaire, and the act of mailing back the questionnaires was regarded as an indication of the subjects’ willingness to participate in the survey. We fully protected any personal information by not collecting the subjects’ name, initials, or age. The data obtained were anonymized. Prior to implementation, the study received approval (H25-34) from the ethics committee of Tokyo Metropolitan Children’s Medical Center, this study’s sponsoring institution.
: With regard to informed consent, explanatory documents were attached to each questionnaire, and the act of mailing back the questionnaires was regarded as an indication of the subjects’ willingness to participate in the survey.