1 Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055, Guangdong, People's Republic of China.
2 Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, No. 135, Xingang West Road, Haizhu District, Guangzhou, 510275, Guangdong, People's Republic of China.
3 Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Stomatological Hospital, Sun Yat-Sen University, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055, Guangdong, People's Republic of China. wangzh75@mail.sysu.edu.cn.