1. Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
2. Department of Microbiology and Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas, USA
3. Departamento de Microbiologia e Imunologia, Instituto de Biociência, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Botucatu, São Paulo, Brazil
4. Department of Microbiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
5. Department of Bacteriology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan