1. Graduate School of Hebei Medical University Shijiazhuang China
2. The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang Hebei China
3. The Department of Respiratory Medicine Second Ward, The Second Affiliated Hospital of Kunming Medical University Kunming China
4. School of Medicine Kunming University Kunming China
5. The Respiratory System Disease Prevention and Control of Public Service Platform of Science and Technology in Yunnan Province, Kunming China