Funding for this research was provided by:
Text and Data Mining valid from 2019-11-27
Received: 24 July 2019
Accepted: 12 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: Not applicable.
: Informed consent was obtained from the patient for the publication of this case report and any accompanying images.
: JY received a research grant from Astellas Co., Pfizer Inc., and Sanofi K.K. MT received a research grant from Olympus Co. TY, KO, NM, EM, CN, and TI declare that they have no competing interests.