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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1992 1
1999 1
2000 1
2003 1
2004 2
2005 1
2007 2
2012 1
2013 1
2022 0
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Page 1
Occupational asthma.
Ehrlich RI, Donson H, Bruning A. Ehrlich RI, et al. Among authors: donson h. S Afr Med J. 1992 Apr 18;81(8):434-5. S Afr Med J. 1992. PMID: 1566224 No abstract available.