1. Department of Dermatology & Academic Wound Healing Division of Infection and Immunity Cardiff University Cardiff CF14 4XN U.K.
2. Pharmatelligence Cardiff CF14 3QX U.K.
3. School of Social and Community Medicine University of Bristol Bristol BS8 2PS U.K.
4. Centre for Trials Research College of Biomedical and Life Sciences Cardiff University Cardiff CF14 4XN U.K.
5. Division of Dermatology Women's College Hospital Toronto Canada
6. Department of Medicine University of Toronto Toronto Canada