Yun-Xiu Wang1, Zhao-Wei Gu2, Li-Ying Hao3. 1. Department of Human Resources, China Medical University Affiliated Shengjing Hospital, Shenyang City 110004, Liaoning Province, China. 2. Department of Otorhinolaryngology, China Medical University Affiliated Shengjing Hospital, Shenyang City 110004, Liaoning Province, China. Electronic address: gordon_222@aliyun.com. 3. Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang City 110122, Liaoning Province, China.