Received: 7 December 2020
Accepted: 28 March 2021
First Online: 6 April 2021
: This study was approved by the Human Research Ethics Committee at the National Center for Child Health and Development, Tokyo, Japan.
: Written informed consent was obtained from the patient’s parents for publication of this case report and the accompanying images. A copy of the written consent form is available for review by the editor-in-chief of this journal.
: The authors declare that they have no competing interests.\