1. Department of Dermatology University of Connecticut Health Center 21 South Road Farmington CT 06032 U.S.A.
2. Probity Medical Research Waterloo ON Canada
3. Dermatology Centre Salford Royal Hospital The University of Manchester Manchester Academic Health Science Centre Manchester U.K.
4. International Psoriasis Council St Louis MO U.S.A.
5. Division of Genetics and Molecular Medicine St John's Institute of Dermatology King's College London London U.K.