1. Ibis Biosciences, Isis Pharmaceuticals, Inc., 1891 Rutherford Road, Carlsbad, California 92008
2. Walter Reed Army Institute for Research, Silver Spring, Maryland 20910
3. Walter Reed Army Medical Center, Washington, D.C. 20307
4. Landstuhl Regional Medical Center, Landstuhl, Germany
5. Aberdeen Proving Ground, Aberdeen, Maryland
6. Unité Biodiversité des Bactéries Pathogènes Emergentes (U389 INSERM), Institut Pasteur, 25-28 rue du Dr. Roux, 75724 Paris Cedex 15, France