Influenza can be a respiratory infection.Logical formLearned from2 sentences. Exposure may result in variety of respiratory disorders.Logical formLearned from2 sentences. Pathophysiology may pertain-to a respiratory system.Logical formLearned from2 sentences. A respiratory system may undergo a sensitization.Logical formLearned from2 sentences. A virus may infect a respiratory tract.Logical formLearned from2 sentences. Releases can be responsible for a range of respiratory disorders.Logical formLearned from2 sentences. Respiratory disorders may be documented for levels of atmospheric pollution.Logical formLearned from2 sentences. (Etiquette measures) can be respiratory.Logical formLearned from2 sentences. A cost can be respiratory.Logical formLearned from2 sentences. A breakdown can be respiratory.Logical formLearned from2 sentences. (Transport systems) can be respiratory.Logical formLearned from2 sentences. Acute respiratory infections may undergo a prevention.Logical formLearned from2 sentences. Some percent of some rescue may contract respiratory illness.Logical formLearned from2 sentences. Epithelial cells may pertain-to an upper respiratory tract.Logical formLearned from2 sentences. Adverse effects of secondhand smoke may include respiratory infections.Logical formLearned from2 sentences.