1. Department of Neurology Two, The People's Hospital of Shouguang, Weifang, Shandong 262700, P.R. China
2. Department of Oncology Two, The People's Hospital of Shouguang, Weifang, Shandong 262700, P.R. China
3. Department of Blood Rheumatic Immunology, The People's Hospital of Shouguang, Weifang, Shandong 262700, P.R. China
4. Department of Respiratory Medicine One, The People's Hospital of Shouguang, Weifang, Shandong 262700, P.R. China
5. Department of General Surgery Three, The People's Hospital of Shouguang, Weifang, Shandong 262700, P.R. China
6. Department of Yang Kou Medical Ward, The People's Hospital of Shouguang, Weifang, Shandong 262700, P.R. China
7. Department of Gastroenterology, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, P.R. China