Affiliation: | (1) Unit for occupational and environmental Dermatology, Department of industrial Medicine, Louvain University, UCL 3033-Clos Chapelle-aux-Champs, 30, B-1200 Bruxelles, Belgium;(2) Department of Hematology, Louvain University, UCL 3033-Clos Chapelle-aux-Champs, 30, B-1200 Bruxelles, Belgium |