1. Department of Internal Medicine School of Veterinary Medicine and Animal Science University of São Paulo Av. Prof. Orlando M. Paiva, 87 São Paulo SP 05508‐270 Brazil
2. Department of Clinical Analysis Faculty of Pharmaceutical Sciences University of São Paulo Av. Prof. Orlando M. Paiva, 580 São Paulo SP 05508‐000 Brazil
3. BioLambda Científica e Comercial LTDA. R. Prof. Teotônio Monteiro de Barros Filho, 532 São Paulo SP 05360‐030 Brazil
4. Department of Clinical Analysis Faculty of Pharmaceutical Sciences São Paulo State University (UNESP) R. Expedicionários do Brasil, 1621 Araraquara SP 14801‐902 Brazil
5. Department of Surgery School of Veterinary Medicine and Animal Science University of São Paulo Av. Prof. Orlando M. Paiva 87 São Paulo SP 05508‐270 Brazil
6. Center for Lasers and Applications IPEN‐CNEN Av. Prof. Lineu Prestes, 2242 São Paulo SP 05508‐000 Brazil
7. Wellman Center for Photomedicine Massachusetts General Hospital 40 Blossom St Boston MA 02114 USA
8. Harvard‐Medical School 25 Shattuck St Boston MA 02115 USA
9. Department of Microbiology Institute of Biomedical Sciences University of São Paulo Av. Prof. Lineu Prestes, 1374 São Paulo SP 05508‐900 Brazil