Forensic Science Center of Jining Medical University, Jining, Shandong, China;2. PICC Catheterization and Maintenance Clinic, Jining No. 1 People's Hospital, Jining, Shandong, China;3. Department of Pain Treatment, Jining No. 1 People's Hospital, Jining, Shandong, China;4. Institute of Forensic Medicine and Laboratory Medicine, Jining Medical University, Jining, Shandong, China;5. Department of Oncology, Jining No. 1 People's Hospital, Jining, Shandong, China