1. Department of Internal Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P.R. China
2. Department of Infectious Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P.R. China
3. Department of Otolaryngology Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P.R. China
4. Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P.R. China