1. School of Medicine & Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong, PR China
2. Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, PR China
3. Laboratory, Qingdao Municipal Hospital, Qingdao, Shandong, PR China