1. Department of Occupational MedicineHefei Prevention and Treatment Center for Occupational DiseasesHefeiChina
2. Department of Respiratory and Critical Care MedicineFirst Affiliated Hospital of Anhui Medical UniversityHefeiChina
3. Department of Respiratory MedicineNingbo First HospitalNingboChina
4. Department of OncologyFirst affiliated hospital of Anhui Medical UniversityHefeiChina