1. Department of Material Chemistry, College of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, Shandong 266109, P.R. China
2. Department of Inspection, Medical College, Qingdao University, Qingdao, Shandong 266000, P.R. China
3. Emergency Department, Shandong Energy Zaozhuang Mining Group Hospital, Zaozhuang, Shandong 277000, P.R. China
4. Department of Cardiology, Lianhe Hospital, Dezhou, Shandong 253000, P.R. China