Ogura, Takayuki https://orcid.org/0000-0002-2525-4985
Nakamura, Yoshihiko
Takahashi, Kunihiko
Nishida, Kazuki
Kobashi, Daisuke
Matsui, Shigeyuki
Article History
Received: 17 April 2018
Accepted: 10 August 2018
First Online: 3 September 2018
Ethics approval and consent to participate
: The study was approved by the ethics committee of all the participating hospitals.
: Not applicable.
: The authors declare that they have no competing interests.
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