Funding for this research was provided by:
Tokyo Medical University Research Grant
Grants-in-Aid of The Ishidsu Shun Memorial Scholarship
Grant-in-Aid for Scientific Research C (Nos. 25670852, 16K11700)
Received: 20 September 2017
Revised: 26 December 2017
Accepted: 17 January 2018
First Online: 1 February 2018
: This study was performed after receiving written consent from all patients and was approved by the institutional ethics committee of the Faculty of Medicine, Tokyo Medical University, Japan (approval no. 2818). Animal experiments were performed according to a protocol approved by the Animal Care and Use committee of the Faculty of Medicine, Tokyo Medical University.
: Not applicable.
: The authors declare that they have no competing interests.
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