1. Division of Emergency MedicineDepartment of General Internal MedicineThe First Affiliated HospitalSun Yat‐sen University Guangzhou China
2. Department of Emergency Intensive Care UnitThe First Affiliated HospitalSun Yat‐sen University Guangzhou China
3. Department of GastroenterologyThe Third Affiliated HospitalSun Yat‐sen University Guangzhou China
4. Department of PathologyThe First Affiliated HospitalSun Yat‐sen University Guangzhou China
5. Department of Head and Neck OncologyPhase 1 Clinical Trial WardThe Cancer Center of The Fifth Affiliated HospitalSun Yat‐sen University Zhuhai China