Yang Yang1, Yanyang Chen1, Shaoyu Chen2, Anjia Han3. 1. Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China. 2. Guangzhou LBP Medical Technology Co. Ltd., Guangzhou, China. 3. Department of Pathology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China. Electronic address: hananjia@mail.sysu.edu.cn.