1. Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing 100050, P.R. China
2. Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
3. Department of Respiratory Medicine, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing 100050, P.R. China
4. Department of Ultrasonography, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing 100050, P.R. China