Dr Syed Nasir
Dr Syed Nasir
Dr Syed Nasir
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Key findings<br />
• After adjusting for age and smoking,<br />
no significant differences were<br />
found in the occurrence of asthma<br />
and chronic bronchitis in cleaners<br />
compared to administrative staff.<br />
• Cleaners had significantly less upper<br />
respiratory tract symptoms<br />
(allergic rhinitis).