1. Nursing Support Center Department, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
2. Nursing Department, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
3. Nucleic Acid Collection Room, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
4. Outpatient Center Operating Room, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China