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Annals of Allergy|February 1, 1980
Four cases of recurrent pseudo-scarlet fever caused by phenathrene alkaloids with a 6-hydroxy group (codeine and morphine)R Voorhorst, S SparreboomDevelopments in Biological Standardization|January 1, 1975
Standardization of allergens by an improved skin-testing techniqueR VoorhorstAnnals of Allergy|September 1, 1977
The human dander atopy. I. The prototype of auto-atopyR VoorhorstAnnals of Allergy|November 1, 1977
The human dander atopy. II. human dander, a complicating factor in the study of the relationship between house dust and dermatophagoides allergensR VoorhorstAnnals of Allergy|April 1, 1977
Atopic skin test re-evaulated. IV. The use of compound 48/80 in routine skin testingR Voorhorst, A H NikkelsAnnals of Allergy|May 1, 1981
Allergen community in pollen from certain tree speciesG van Dalen, R VoorhorstAnnals of Allergy|February 1, 1975
Atopic skin test re-evaluated. III. The wheal: flare ratio, the log-dose response curve and the bio-assay of allergen extractsR Voorhorst, H Van KriekenAllergie Und Immunologie|January 1, 1978
Atopy to dander from domestic animalsI S Muljono, R VoorhorstAnnals of Allergy|February 1, 1981
Atopic skin test re-evaluated. X. Comparison of a perfected technique of intracutaneous skin testing and the prick test performed with a modified Morrow Brown NeedleG Nierop, R Voorhorst, R L De VijverPageof 2