St Vincent's University Hospital, Dublin, Ireland
∗Correspondence to: Dr Dmitri Wall, c/o Department of Dermatology, St Vincent's University Hospital, Elm Park, Dublin 4, Ireland E-mail:[email protected].
Funding sources: None.
Disclosure: Dr Kirby has acted as a consultant for Wyeth, Abbott, and Janssen-Cilag. He is in receipt of unrestricted research grants from Serono Ltd, Janssen-Cilag, and Abbott. Dr Wall has no conflict of interest to declare.