1. Tibotec Therapeutics, Titusville, New Jersey.
2. The Well Project, Inc., Nellysford, Virginia.
3. Division of Infectious Diseases, University of California, Los Angeles, School of Medicine, Los Angeles, California.
4. Division of Infectious Diseases and Environmental Medicine, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania.
5. Infectious Disease Clinic, Chatham County Health Department, Savannah, Georgia.
6. Tibotec Inc., Titusville, New Jersey.