1. Department of Dermatology, Royal Hallamshire Hospital, Sheffield S10 2JF, U.K.
2. Alopecia UK, 5 Titchwell Road, London SW18 3LW, U.K.
3. Department of Dermatology, Brighton General Hospital, Elm Grove, Brighton BN2 3EW, U.K.
4. Department of Medicine, University of Tasmania, Hobart, Australia