1. School of Nursing, Southwest Medical University, Luzhou, China
2. Department of Rheumatism and Immunology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
3. Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
4. Department of Cardiovascular Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
5. Department of Central Sterile Supply, The Affiliated Hospital of Southwest Medical University, Luzhou, China
6. The Operating Room, The Affiliated Hospital of Southwest Medical University, Luzhou, China
7. Department of Nursing, The Affiliated Hospital of Southwest Medical University, Luzhou, China