Funding for this research was provided by:
National Natural Science Foundation of China (81672675, 81202324)
Excellent Young Scientist Foundation of Sichuan University (2017SCU04A16)
Open Foundation of State Key Laboratory of Oral Diseases, Sichuan University (SKLOD201714)
Received: 11 September 2017
Accepted: 26 January 2018
First Online: 26 February 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the West China Hospital, Sichuan University.
: Not applicable.
: The authors declare that they have no competing interests.
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