1 Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
2 Department of Neurology, Mayo Clinic, Rochester, MN, 55905, USA.
3 Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China. zhoulij3@mail.sysu.edu.cn.