[1] Univ Calif Los Angeles, Harbor Med Ctr, Div Infect Dis,Res & Educ Inst, St Johns Cardiovasc Res Ctr,Dept Med, Torrance, CA 90509 USA
[2] Univ Calif Los Angeles, Sch Med, Los Angeles, CA 90024 USA
[3] CHU Vaudois, Inst Microbiol, CH-1011 Lausanne, Switzerland
[4] Univ Hamburg, Inst Allgemeine Bot, AMP 3, D-22609 Hamburg, Germany