Hanaoka, Ako
Naganuma, Toshihide
Takemoto, Yoshiaki
Uchida, Junji
Nakatani, Tatsuya
Kabata, Daijiro
Shintani, Ayumi
Article History
Received: 23 November 2018
Accepted: 4 February 2019
First Online: 13 February 2019
Ethics approval and consent to participate
: This study protocol was conducted in accordance with the Principles of the Declaration of Helsinki and the Declaration of Istanbul, and was approved by the ethics committee of the Osaka City University Graduate School of Medicine (No. 4009). Opt-out consent was obtained instead of written informed consent; i.e., we provided the patients with information explaining the proposed research project (the purpose, required individual data and duration of the study) by means of an information sheet or hospital website and gave them the opportunity to opt out.
: For publication of this manuscript, opt-out consent was obtained by means of an information sheet or hospital website.
: The authors declare that they have no competing interests.
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