Subjects
- Cough -- etiology[remove]6
- Cough -- diagnosis1
- Cough -- drug therapy1
- Cough -- therapy1
- Digestive System Diseases -- chemically induced1
- Lung Neoplasms -- pathology1
- Nasal Mucosa -- pathology1
- Nicotine -- adverse effects1
- Nose Diseases -- complications1
- Smoking -- adverse effects1
- Smoking -- pathology1
- Smoking Prevention1
