1. Department of Breast and Thyroid Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, P. R. China
2. Department of Nursing, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, P. R. China
3. Traffic Police Department, Jinan Public Security Bureau, Jinan 250021, Shandong, P. R. China
4. Scientific Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, P. R. China