1 Department of Urology, The First Affiliated Hospital of Xiamen University, Siming District, Xiamen, Fujian, China.
2 School of Medicine, Xiamen University, Xiamen, Fujian, China.
3 Department of Urology, The First Affiliated Hospital of Xiamen University, Siming District, Xiamen, Fujian, China. Electronic address: zhuangxuan2006@aliyun.com.