1. Department of Chemistry and Molecular Biology, Dermatochemistry
and Skin Allergy, University of Gothenburg, SE-412 96 Gothenburg, Sweden
2. Laboratoire de Dermatochimie, ILB 4, rue Blaise Pascal - CS 90032, F-67081 Strasbourg cedex, France
3. Department of Dermatology, Sahlgrenska
Academy, University of Gothenburg, SE-405 03 Gothenburg, Sweden