1. From the Department of Infection, Immunity, and Cardiovascular Disease, University of Sheffield, Sheffield (A.M.), the Dermatology Centre, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Salford (M.H.), and the Centre for Dermatology Research, University of Manchester, Manchester Academic Health Science Centre and National Institute for Health Research Manchester Biomedical Research Centre, Manchester (M.H.) — all in the United Kingdom.