Ihira, Hikaru
,
Sawada, Norie
Yamaji, Taiki
Goto, Atsushi
Shimazu, Taichi
Inoue, Manami
Iwasaki, Motoki
Tsugane, Shoichiro
Article History
Received: 4 July 2018
Revised: 9 January 2019
Accepted: 18 January 2019
First Online: 12 February 2019
Competing interests
: The authors declare that they have no competing interests.
: This study was supported by the National Cancer Centre Research and Development Fund (since 2011), and a Grant in Aid for Cancer Research from the Ministry of Health, Labour and Welfare of Japan (from 1989 to 2010)
: The study was conducted in compliance with the provisions of the Declaration of Helsinki. The study protocol was approved by the Institutional Review Board of the National Cancer Center, Japan. The participants were informed of the study objectives, and those who completed the survey questionnaire were regarded as consenting to participation.
: For information on how to submit an application for gaining access to JPHC data and/or biospecimens, please follow the instructions at ExternalRef removed.