Article History
Received: 29 July 2019
Accepted: 9 September 2019
First Online: 7 October 2019
Ethics approval and consent to participate
: This research was approved by Hyogo Children’s Hospital Ethics Committee (approval No. R30-23). The research contents were announced on the hospital website, and patient requests to withdraw from the study were accepted.
: Not applicable.
: The authors declare that they have no competing interests.