Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing 100070, China;
Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing 100070, China;
School of Healthcare Administration and Education, Capital Medical University, Beijing 100069, China;
School of Healthcare Administration and Education, Capital Medical University, Beijing 100069, China;
School of Healthcare Administration and Education, Capital Medical University, Beijing 100069, China;
School of Healthcare Administration and Education, Capital Medical University, Beijing 100069, China;