1. TechLab, Inc., Corporate Research Center, Blacksburg, Virginia 240601;
2. Anaerobe Laboratory, Indiana University Hospital, Indianapolis, Indiana 462022;
3. Clinical Pathology, Hershey Medical Center, Hershey, Pennsylvania 170333;
4. Department of Microbiology, PinnacleHealth System, Harrisburg, Pennsylvania 17105-87004; and
5. Department of Medical and Research Technology, School of Medicine, University of Maryland, Baltimore, Maryland 21201-10825