1Department of Dermatology, Turku University Central Hospital, FIN-20520 Turku, Finland;
2Department of Medical Biochemistry, University of Turku, FIN-20520 Turku, Finland
3Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, FIN-20520, Turku, Finland
4The Children’s Institute for Surgical Science, The University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA;
5Department of Internal Medicine, University of Florence, Florence 50134, Italy; and
6Department of Immunology, Scripps Research Institute, La Jolla, California 92121, USA