Funding for this research was provided by:
the Japan Science and Technology Agency
JSPS KAKENHI (17K19810, 18K07387, 19K08596, 16K10520, 20K17953, 19K09451, 17K16626, 20K07810)
the Japan Agency for Medical Research and Development
Setsuro Fujii Memorial, the Osaka Foundation for Promotion of Fundamental Medical Research
The Japan Public Health Center-based Prospective Study supported by National Cancer Center Research and Development Fund (None)
Grant-in-Aid for Cancer Research from the Ministry of Health, Labour and Welfare of Japan (None)
Received: 12 June 2020
Accepted: 30 April 2021
First Online: 9 June 2021
: This study was approved by the Local Ethical Review Board of the Chiba University Graduate School of Medicine (Chiba, Japan) as well as the review boards of the cooperating hospitals or institutes. Sera were collected from participants who had provided informed consent. The study was conducted in accordance with the principles of the Declaration of Helsinki (2013).
: Not applicable.
: This work was performed in collaboration with Fujikura Kasei Co., Ltd. and Celish FD Inc. RN, GT, NS, and HK are employees of Fujikura Kasei Co., Ltd., and TK and HD are employees of Celish Fd Inc.