Text and Data Mining valid from 2018-07-03
Received: 28 May 2018
Accepted: 25 June 2018
First Online: 3 July 2018
Ethics approval and consent to participate
: The ethics committee of Ibaraki Prefectural University of Health Sciences approved the study (nos. 637 and e146). Informed consent was obtained from the patients.
: Written informed consent for the publication of Fig. InternalRef removed was obtained from the patient.
: The authors declare that they have no competing interests.
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