Author Contributions
Shinya Koshinuma: Conception and design of study, acquisition of data,
analysis and/or interpretation of data, Drafting the manuscript
Takafumi Fujii: Conception and design of study, acquisition of data,
analysis and/or interpretation of data, Drafting the manuscript
Takeshi Okamura: acquisition of data
Yasuyuki Asada: analysis and/or interpretation of data
Yoshisato Machida: revising the manuscript critically for important
intellectual content
Gaku Yamamoto: Conception and design of study, revising the manuscript
critically for important intellectual content
All authors critically revised the report, commented on drafts of the
manuscript, and approved the final report.