1. Department of Dermatology; University Hospital Crosshouse; Kilmarnock U.K
2. Department of Dermatology; Our Lady's; Children's Hospital Crumlin; Dublin Ireland
3. National Children's Research Centre; Children's Hospital Crumlin; Dublin Ireland
4. Clinical Medicine; Trinity College Dublin; Dublin Ireland
5. Dermatology and Genetic Medicine; Division of Biological Chemistry and Drug Discovery; University of Dundee; Dundee U.K
6. Pachyonychia Congenita Project; Salt Lake City UT U.S.A
7. Division of Computational Biology; School of Life Sciences; University of Dundee; Dundee U.K
8. Alan Lyell Centre for Dermatology; Queen Elizabeth University Hospital; Glasgow U.K