Text and Data Mining valid from 2019-04-11
Received: 12 September 2018
Accepted: 26 March 2019
First Online: 11 April 2019
Ethics approval and consent to participate
: This study was approved by the ethics committee of the University of Tokyo Hospital, Saitama Medical Center, Jichi Medical University, and Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital. Written consent was obtained from all the patients included in this study. If the patient was less than 18 years old, informed consent was obtained from the parents or the legal guardians.
: Not applicable.
: The authors declare no competing interest regarding the publication of this paper.
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