Refine your search
Availability
-
Authors
-
Topics
- Aged
- Bronchitis
- CD4-Positive T-Lymphocytes
- CD8-Positive T-Lymphocytes
- Female
- Forced Expiratory Volume
- Humans
- Immunohistochemistry
- Lymphocyte Count
- Male
- Middle Aged
- Prognosis
- Pulmonary Disease, Chronic Obstructive
- Sensitivity and Specificity
- Severity of Illness Index
- Smoking
- Sputum
- Statistics, Nonparametric
- cytology
- diagnosis
- Show more
- Show less
-
Languages