1. Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
2. Department of Medical Laboratory, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
3. Department of Central Laboratory, Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China