1. Department of Biochemistry, Institute of Biomedical Sciences; Federal University of Alfenas (UNIFAL-MG); Alfenas MG 37130-000 Brazil
2. Department of Clinics and Surgery, School of Dentistry; Federal University of Alfenas (UNIFAL-MG); Alfenas MG 37130-000 Brazil
3. Wellman Center for Photomedicine; Massachusetts General Hospital; Boston MA 02114 USA
4. Department of Dermatology; Harvard Medical School; Boston MA 02115 USA
5. Harvard-MIT Division of Health Sciences and Technology; Cambridge MA 02139 USA
6. Department of Pathology and Parasitology, Institute of Biomedical Sciences; Federal University of Alfenas (UNIFAL-MG); Alfenas MG 37130-000 Brazil