1. School of Pharmacy, Weifang Medical University, Weifang, 261053, Shandong, P. R. China
2. Department of Cardiology, Affiliated Hospital of Weifang Medical University, Weifang, Shandong, P. R. China
3. Department of Respiration, The First Affiliated Hospital of Weifang Medical University, Weifang People's Hospital, Weifang, 261031, Shandong, P. R. China
4. School of Bioscience and Technology, Weifang Medical University, Weifang, 261053, PR China
5. Department of Epidemiology, Weifang Medical University, Weifang, 261053, Shandong, China