1. Department of Pharmacology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
2. Department of Cardiology, Yantai Kaifaqu Hospital, Yantai, Shandong 264006, P.R. China
3. Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
4. Department of Clinical Pharmacy, Key Laboratory of Applied Pharmacology in Universities of Shandong, Weifang Medical University, Weifang, Shandong 261053, P.R. China