Author Contributions
Mayumi Higa collected data from medical records, was involved in data management, performed statistical analysis, and wrote the draft manuscript. Takeshi Morimoto contributed to the study design, supervised statistical analysis as the study biostatistician, and revised the draft manuscript. Masayuki Ikeda contributed to the development of the study concept and study design. Shinichiro Ueda conducted this registry study as the principal investigator, contributed to the study concept and design, and revised the draft manuscript.