Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (20791085, 23592301, 17K11066)
Received: 6 April 2020
Accepted: 4 September 2020
First Online: 14 September 2020
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Boards of Tohoku University School of Medicine (#2015-1-696, approved January 25, 2016), and written informed consent was obtained from all patients. This study was registered at the UMIN Clinical Trials Registry (Identifier: UMIN000022903, principal investigator: Shigekazu Sugino, date of registration: June 27, 2016).
: Not applicable
: Dr. Nagasaki received research funding from Toshiba Corporation, which provided the Japanese population-specific DNA microarray (Japonica array™) under license from Tohoku University. The other authors declare that they have no competing interests.