1. Dermatology and Genetic Medicine Division of Biological Chemistry and Drug Discovery School of Life Sciences University of Dundee Dundee UK
2. Pachyonychia Congenita Project Holladay UT USA
3. Department of Dermatology University Hospital Crosshouse Kilmarnock UK
4. Department of Dermatology Glasgow Royal Infirmary Glasgow UK
5. East of Scotland Regional Genetics Service Ninewells Hospital Dundee UK
6. Alan Lyell Centre for Dermatology Queen Elizabeth University Hospital Glasgow UK