Received: 7 March 2019
Accepted: 14 June 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: The procedures and possible risks associated with this study were explained and written informed consent for participation obtained according to the policy of the Ethical Review Board of NTT Medical Centre Tokyo.
: Written informed consent was obtained from the patient for the publication of this case report.
: The authors declare that they have no competing interests.