Funding for this research was provided by:
Ministry of Health, Labour and Welfare (H30Sukoyaka-004, H29Sukoyaka-005, H28-Sukoyaka-Ippan-001)
Japan Agency for Medical Research and Development (BIRTHDAY)
Ministry of Education, Culture, Sports, Science and Technology (#16K01806)
Text and Data Mining valid from 2019-09-11
Received: 4 June 2019
Accepted: 30 August 2019
First Online: 11 September 2019
Ethics approval and consent to participate
: The design of this study and procedures for obtaining informed consent were approved by the Medical Ethics Committee of Kurume University School of Medicine (#13211). All participants provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.