Department of Dermatology, University College Hospital, London, England; Correspondence to: Giulia Rinaldi, BSc, MSc, MBBS, MRCP (UK), Department of Dermatology, University College Hospital, 235 Euston Rd, London, NW1 2BU, England.
Pauline Marren, MBBS
Department of Dermatology, Galway University Hospital, Galway, Ireland
Christopher Bunker, MBBS
Department of Dermatology, University College Hospital, London, England
Deirdre O’Callaghan, MBBS
Department of Dermatology, Galway University Hospital, Galway, Ireland