1. Department of Respiratory, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China (mainland)
2. Department of Respiratory, Nanjing Brain Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
3. Department of Respiratory, The Second Hospital of LianYunGang, Lianyungang, Jiangsu, China (mainland)