1. Unit of Dermatology, Hospital San Jorge, Huesca, Spain.
2. Institute of Health Sciences of Aragon, Zaragoza, Spain.
3. Unit of Microbiology, Hospital Royo Villanova, Zaragoza, Spain.
4. Laboratory of Microbiology of Water, Tonw Hall Institute of Public Health, Zaragoza, Spain.
5. Unit of Dermatology, Hospital Royo Villanova, Zaragoza, Spain.
6. Department of Microbiology, University Hospital Miguel Servet, Universidad de Zaragoza, IIS Aragón, Zaragoza, Spain.
7. Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts.
8. Department of Dermatology, Harvard Medical School, Boston, Massachusetts.
9. Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts.