Abstract
Conflicts of interest: The authors have declared no conflicts. European baseline series, the shoe series, and a number of additional allergens, including benzidine (1% pet). The selection of additional allergens was based on an inventory of the chemicals used at these factories (1). Patch tests were read on days 2, 4, and 7, as recommended by the International Contact Dermatitis Research Group (2). A positive reaction to benzidine was observed in 3 workers.
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