Department of Respiratory Medicine The Second Affiliated Hospital of Hainan Medical University;
Hainan Hospital Affiliated to Nanhua University;
Department of General Medicine Hainan Hospital Affiliated to Hainan Medical UniversityDepartment of General Medicine Hainan General Hospital;
Health center of Wencheng town Wenchang City;
Xincun Health center of Lingshui Li Autonomous County;
Meitai Health center of Lingao County;
Zuguan Health center of Lingshui Li Autonomous County Haikou 570311;
Department of General Medicine Hainan Hospital Affiliated to Hainan Medical UniversityDepartment of General Medicine Hainan General Hospital;
Department of General Medicine Hainan Hospital Affiliated to Hainan Medical UniversityDepartment of General Medicine Hainan General Hospital;
Hainan Hospital Affiliated to Nanhua University;
Hainan Hospital Affiliated to Nanhua University;
Department of Respiratory Medicine The Second Affiliated Hospital of Hainan Medical University;
Department of General Medicine Hainan Hospital Affiliated to Hainan Medical UniversityDepartment of General Medicine Hainan General Hospital;
COPD; SNHG3; mononuclear cells; clinical indicators;