Received: 2 November 2017
Accepted: 7 May 2018
First Online: 22 May 2018
: The animal studies were reviewed and approved by the Animal Experiment Ethics Committee of Seikagaku Corporation and performed under the animal husbandry/management system in an appropriate environment with animal protection/welfare in mind.
: All authors of this paper are employees of Seikagaku Corporation. The authors declare that they have no competing interests.
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