,
Okazaki, Tomoya http://orcid.org/0000-0002-0540-8772
Hifumi, Toru
Kawakita, Kenya
Kuroda, Yasuhiro
Funding for this research was provided by:
scientific research grants from the Ministry of Education, Culture, Sports, Science and Technology of Japan (16K09034, 15H05006)
the Ministry of Health, Labor, and Welfare of Japan (25112601)
Article History
Received: 28 May 2019
Accepted: 9 November 2019
First Online: 19 November 2019
Ethics approval and consent to participate
: The protocol and consent procedures were approved by the Institutional Review Board of each participating hospital.
: Not applicable.
: The authors declare that they have no competing interests.