Funding sources:
None available
The patient consent statement : A written consent has been obtained before submission and be made available to the publisher if requested.
Authorship statement: Ozaki A, Kaneda Y, and Senoo Y wrote the manuscript. The other authors made substantial contributions to the design of the study and critical revision of the manuscript.
Conflicts of interest statement : Ozaki A receives personal fees from MNES Inc, outside the submitted work. Tetsuya Tanimoto receives personal fees from MNES Inc, and Bionics co., ltd. outside the submitted work.