1 Institute of Dermatologists, Department of Dermatology, Dublin, Ireland; Charles Institute of Dermatology, Department of Dermatology, University College Dublin, Ireland. Electronic address: profryan@instituteofdermatologists.ie.
2 Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
3 AbbVie, Inc, North Chicago, Illinois.
4 Analysis Group, Inc, Boston, Massachusetts.
5 Department of Dermatology, University of Alabama at Birmingham, Birmingham, Alabama.