Matsumoto, Hiroshi
Kawazoe, Akihito
Shimada, Kaoru
Fukuoka, Shota
Kuboki, Yasutoshi
Bando, Hideaki
Kojima, Takashi
Ohtsu, Atsushi
Yoshino, Takayuki
Doi, Toshihiko
Shitara, Kohei
Article History
Received: 2 April 2017
Accepted: 25 January 2018
First Online: 31 January 2018
Ethics approval and consent to participate
: The retrospective data was collected under an Institutional Review Board (IRB) waiver in accordance with the Japanese Ethical Guidelines for Epidemiological Research.
: Not applicable.
: The authors declare that they have no competing interests.
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