M Wernfors

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Out of 118 workers exposed to phthalic anhydride (PA) dust for 2 months or more in four plants producing alkyd and/or polyunsaturated polyester resins, 28 (24%) suffered from work-related rhinitis, 13 (11%) from chronic productive bronchitis, and 21 (28%) from work-associated asthma. Asthma was generally preceded by rhinitis and was mostly of late type. 3(More)
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