Received: 16 May 2021
Revised: 17 June 2021
Accepted: 17 June 2021
First Online: 26 June 2021
: The study protocol was approved by the Nagoya City University Graduate School of Medical Sciences and Nagoya City University Hospital Institutional Review Board (reference number, 60-20-0032). After explaining the study flow to the participants by verbally and the video made for instruction, we obtained written informed consent for study participation from all the participants.
: We obtained written consent for publication. Patients were not involved in the study.
: The authors declare that they have no competing interests.