1. The Disinfection Supply Room of Changyi People's Hospital, Changyi, Shandong Province 261300, China
2. Health Examination Center of Changyi City People's Hospital, Changyi, Shandong Province,261300, China
3. The Second Ophthalmology Department of Changyi People's Hospital, Changyi, Shandong Province,261300, China
4. Disinfection and Supply Department of Zibo Central Hospital of, Zibo, Shandong Province,255000, China