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Article History

Received: 12 April 2017

Accepted: 7 December 2017

First Online: 22 January 2018

Ethics approval and consent to participate

: The animal studies were conducted according to the guidance of the Institutional Animal Care and Use Committee in the Korea Institute of Toxicology (KRICT) (accredited by AAALAC International, 1998) under the current Good Laboratory Practice regulations for nonclinical laboratory studies.

: Not applicable.

: The authors declare that they have no competing interests.

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