We thank Yong Liu from Mayo Clinic for his linguistic assistance during the preparation of this manuscript. This work is supported by the National Natural Science Foundation of China (Grant No. 81741143), the Education Department of Hunan Province, China (Grant No. 17A186) and the Natural Science Foundation of Hunan Province, China (Grant No. 2018JJ3458).
We thank Yong Liu from Mayo Clinic for his linguistic assistance during the preparation of this manuscript. This work is supported by the National Natural Science Foundation of China (Grant No. 81741143 ), the Education Department of Hunan Province , China (Grant No. 17A186 ) and the Natural Science Foundation of Hunan Province , China (Grant No. 2018JJ3458 ).