1.   Conclusions - Over half the children presenting to this referral hospital with respiratory symptoms were hypoxaemic.

2.   Most epidemiological studies have not analysed respiratory symptoms in relation to birth weight and gestational age separately.

3.   Respiratory symptoms were analysed by multiple logistic regression and lung function standard deviation scores by multiple linear regression.

4.   The mechanisms through which prenatal events influence lung function differ from those that affect respiratory symptoms in children.

5.   The respiratory symptoms are its main indication for use.

6.   This was the sample used for the analysis of birth weight, gestational age, and respiratory symptoms.

7.   Babies with such respiratory symptoms should always have their blood checked to see if they are getting enough oxygen.

8.   In the years that followed, a number of lifeguards at the facility developed respiratory symptoms, leading several to quit.

9.   Others had nausea, vomiting and diarrhea, more suggestive of stomach flu, before developing the more serious respiratory symptoms.

10.   Particulate matter invades the lungs, increasing respiratory symptoms and disease.