1 St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom.
2 Genetics and Genomic Medicine Department, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
3 Centre for Cell Biology and Cutaneous Research, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.
4 Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland.
5 St John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom. Electronic address: joanna.jackow@kcl.ac.uk.