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Article History

Received: 17 August 2017

Accepted: 8 February 2018

First Online: 23 February 2018

Ethics approval

: All researchers on the animal studies were complied with the standards for the care and use of experimental animals. All of the animal experiments were performed in accordance to the instructions of the Medical Ethics Committee for the Use of Experimental Animals at Gachon University (GIACUC-R2015014).

: Not applicable

: The authors declare that they have no competing interests.

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