Minatoya, Machiko
Itoh, Sachiko
Yamazaki, Keiko
Araki, Atsuko
Miyashita, Chihiro
Tamura, Naomi
Yamamoto, Jun
Onoda, Yu
Ogasawara, Kazuki
Matsumura, Toru
Kishi, Reiko
Funding for this research was provided by:
Grant-in Aid from the Ministry of Health, Labour and Welfare of Japan
Japan Society for the Promotion of Science (JP16H02645, JP16K16619)
Environment Research and Technology Development Fund (5-1454)
Article History
Received: 29 May 2018
Accepted: 15 August 2018
First Online: 7 September 2018
Ethics approval and consent to participate
: This study was conducted with the informed consent of all participants in written forms. The protocol used in this study was approved by the Institutional Ethical Board for epidemiological studies at the Hokkaido University Graduate School of Medicine (May 31, 2003) and Hokkaido University Center for Environmental and Health Sciences (reference no. 14, March 22, 2012).
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.