Is occupational rhinitis a risk factor for developing occupational asthma?

The following references have been associated with this question by users of this website. They do not form part of the BOHRF occupational asthma guidelines.

burgeps Caldeira 2006 no increase with rhitis found
burgeps Castano 2009
burgeps Dragos 2009 the group with rhinitis seem separate from those developing occupational asthma in the isocyanate exposeed group
burgeps Moscato 2010 suggests a lack of relationnship between occupational rhinitis and subsequent occupational asthma

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