A respiratory tract may undergo a colonisation.Logical formLearned from5 sentences. Respiratory failure can be in infants.Logical formLearned from5 sentences. An increase can be in respiratory illness.Logical formLearned from5 sentences. (Body systems) can be respiratory.Logical formLearned from5 sentences. Diseases may pertain-to respiratory systems.Logical formLearned from5 sentences. A respiratory failure may undergo an event.Logical formLearned from5 sentences. Infectious agents can be respiratory.Logical formLearned from5 sentences. A respiratory illness may be caused by a virus.Logical formLearned from5 sentences. Germs can be respiratory.Logical formLearned from5 sentences. A gear can be respiratory.Logical formLearned from5 sentences. Changes can be in a respiratory system.Logical formLearned from5 sentences. A deficiency can be respiratory.Logical formLearned from5 sentences. Respiratory diseases may undergo an exacerbation.Logical formLearned from5 sentences. Some young persons may die from respiratory failure.Logical formLearned from5 sentences. A sensitizer can be respiratory.Logical formLearned from5 sentences.