Bibliographical noteFunding Information:
Received 17 February 2000; revised 24 February 2000; electronically published 15 May 2000. Financial support: VA Merit Review (T.A.R. and J.R.J.); National Institutes of Health grants AI 42059 (T.A.R.) and DK 47504 (J.R.J.). Reprints or correspondence: Dr. Thomas A. Russo, Dept. of Medicine, Division of Infectious Diseases, 3435 Main St., Biomedical Research Bldg., Rm. 141, Buffalo, NY 14214E (email@example.com).