1. Publicity Department, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, 730050 Gansu, China
2. Department of Nursing, The Third People’s Hospital of Gansu Province, Lanzhou, 730050 Gansu, China
3. Children’s Rehabilitation Department, Gansu Province Hospital Rehabilitation Center, Lanzhou, 730000 Gansu, China
4. Key Laboratory of Remote Sensing of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
5. Public Health and Nosocomial Infection Management Division, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, 730050 Gansu, China