Oyama, Yuzo
Nishida, Haruto
Kusaba, Takahiro
Kadowaki, Hiroko
Arakane, Motoki
Wada, Junpei
Urabe, Shogo
Hirano, Takashi
Kawano, Kenji
Suzuki, Masashi
Yokoyama, Shigeo
Daa, Tsutomu
Article History
Received: 2 April 2018
Accepted: 18 July 2018
First Online: 27 July 2018
Ethics approval and consent to participate
: Our study was carried out according to the ethical guideline of the Declaration of Helsinki (as revised in 2013 in Brazil) and was approved by the institutional review board of Oita University Hospital and Oita Prefecture Hospital (the reference number 1298) and was approved the study did not require additional informed consent for our retrospective study.
: Not applicable.
: The authors declare that they have no competing interests.
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