Institution: | Unit of Excellence in Immunotoxicology;, Team for Biological Mechanisms and Prevention of Work-Related Diseases;and Control of Hypersensitivity Diseases, Finnish Institute of Occupational Health, FIN-00250 Helsinki, Finland; Department of Pathology, Helsinki University Central Hospital, Helsinki, Finland; Department of Pathology, Kymenlaakso Central Hospital, Kotka, Finland; Department of Dermatology, Venereology and Allergology, University of Helsinki, Helsinki, Finland |