1. Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, U.S.A.
2. Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, U.S.A.
3. Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A.
4. HZI – Helmholtz Center for Infection Research (formerly GBF), Braunschweig, Germany