Funding for this research was provided by:
National Research Foundation of Korea (NRF2012R1A3A1050385)
Received: 24 February 2019
Accepted: 27 March 2019
First Online: 5 April 2019
Ethics approval and consent to participate
: All the surgeries and experiments were reviewed and approved by the Institutional Animal Care and Use Committee (IACUC) at Seoul National University. Consent to participate is not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
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