1. Department of Internal Medicine, Postgraduate Program in Medicine: Medical Sciences Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
2. Department of Microbiology, Postgraduate Program in Agricultural and Environmental Microbiology Universidade Federal do Rio Grande do Sul Porto Alegre Brazil
3. Department of Chemistry and Physics, Postgraduate Program in Health Promotion, Postgraduate Program in Environmental Technology Universidade de Santa Cruz do Sul Santa Cruz do Sul Brazil
4. Department of Microbiology, Immunology, and Parasitology, ICBS Universidade Federal do Rio Grande do Sul Porto Alegre Brazil