1. Department of Microbiology and Immunology Stritch School of Medicine Loyola University Chicago Maywood Illinois USA
2. Department of Microbiology and Immunology Stanford University School of Medicine Stanford California USA
3. Departments of Obstetrics & Gynecology and Urology Stritch School of Medicine Loyola University Chicago Maywood Illinois USA
4. Department of Obstetrics, Gynecology and Reproductive Sciences University of California San Diego La Jolla California 92093 USA