Annatto hypersensitivity after oral ingestion confirmed by placebo-controlled oral challenge.

Department of Allergology, Allergology and Pneumonology Clinic, Medical University of Gdańsk, Gdańsk, Poland. Electronic address: sadowska.beata@yahoo.pl. Department of Allergology, Allergology and Pneumonology Clinic, Medical University of Gdańsk, Gdańsk, Poland.