Received: 22 August 2017
Accepted: 9 January 2018
First Online: 18 January 2018
Ethics approval and consent to participate
: This study was conducted in compliance with the principles of the Declaration of Helsinki, and the protocol was approved by the ethics committee of Okayama University Hospital (No.1612–504). The information of this study was published on the internet. And Patients were given the opportunity to opt-out.
: This manuscript contains some individual person’s data (images). So we obtained consent form from the patient.
: The authors declare that they have no competing interests.
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