Acknowledgements
The authors thank the patients and clinical staff at Wakayama Medical University Hospital for their participation in this study.
Informed consent
Informed consent was obtained in the form of an opt-out via a website. This study was approved by the ethics committee of Wakayama Medical University (No. 3022).
Disclosure statement
The authors declare that they have no conflicts of interest.
Author contributions
HH designed the study. HH, MY, MS, and MT collected the data. HH wrote the manuscript. MS, MT and ST critically reviewed the results and edited the manuscript. ST supervised the study. All of the authors approved the final submitted version of the manuscript.