Funding for this research was provided by:
Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sport (16K10890)
Johnson and Johnson K.K. Medical Company (2531)
Text and Data Mining valid from 2018-06-07
Received: 9 February 2018
Accepted: 29 May 2018
First Online: 7 June 2018
Ethics approval and consent to participate
: All cadavers were donated to Tokyo Medical and Dental University. All of the donors had voluntarily declared that their remains were to be donated as materials for education and study. This voluntary donor system of cadavers is in place throughout Japan, and our study completely complies with the current Japanese laws.
: This study was partly supported by Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports(C) (No. 16K10890), and grants from the JA Kyosai Research Institute (Agricultural Cooperative Insurance Research Institute) and Johnson and Johnson K.K. MedicalCompany (No. 2531). The authors declare that they have no competing interests.
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