1. National Institute of Chemistry Slovenia, Hajdrihova 19, 1000 Ljubljana, Slovenia
2. Inflammation Program, Roy J. and Lucille A. Carver College of Medicine, University of Iowa Departments of Internal Medicine and Microbiology, and Veterans' Administration Medical Center, Iowa City, Iowa 52242
3. Interfaculty Institute of Microbiology and Infection medicine, Cellular and Molecular Microbiology Section, University of Tübingen, 72076 Tübingen, Germany