Received: 27 March 2020
Accepted: 9 June 2020
First Online: 16 June 2020
Ethics approval and consent to participate
: The study protocol and the use of the ALLSTAR database in this study have been approved by the Institutional Review Board of Nagoya City University Graduate School of Medical Sciences and Nagoya City University Hospital (No. 709).
: Not applicable.
: The authors declare that they have no competing interests.