1. Department of Purchasing Agency, Baoji Municipal Central Hospital, Baoji, Shaanxi Province, China
2. Office of Nursing Management, Baoji Municipal Central Hospital, Baoji, Shaanxi Province, China
3. Office of Medical Research, Baoji Municipal Central Hospital, Baoji, Shaanxi Province, China
4. Department of Operating Room, Chang’An Hospital, Xi’an, Shaanxi Province, China