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Article History

Received: 23 April 2020

Accepted: 25 May 2020

First Online: 4 June 2020

Ethics approval and consent to participate

: The authors assert that all procedures contributing to this work comply with the ethical standards of relevant national and institutional procedures for the care and use of laboratory animals. The present investigation was approved by the Ethics Review Committee for Animal Experimentation of Nagasaki University School of Medicine, and all animal experiments were performed according to the guidelines for animal experimentation in the Laboratory Animal Center for Biomedical Research at Nagasaki University.

: Not applicable.

: The authors declare that they have no competing interests.