Funding for this research was provided by:
Japanese Ministry of Education, Culture, Sports, Science, and Technology (16H06277, 17015018, 221S0001)
Received: 25 July 2019
Accepted: 19 December 2019
First Online: 9 January 2020
Ethics approval and consent to participate
: The J-MICC Study, Daiko Study, and Shizuoka part of the J-MICC Study were approved by the Ethics Review Committee of the Nagoya University Graduate School of Medicine (approval numbers were 2010–0939, 2008–0618 and 2011–1248, respectively). All the participants provided written informed consent.
: The data analyzed in this study did not include personal information (i.e., name or address). All participants were adults.
: The authors declare that they have no competing interests.