Received: 13 August 2019
Accepted: 8 November 2019
First Online: 21 November 2019
Ethics approval and consent to participate
: This study was approved by the ethical committees of Eastern Yokohama Hospital and Toho University Sakura Medical Center (No. 2014059).
: Witten informed consents were obtained from all of the parents for publication of this case report. All patients’ personal data have been anonymized.
: The authors declare that they have no competing interest.