[1] NIAID, BETHESDA, MD 20205 USA
[2] NCI, BETHESDA, MD 20205 USA
[3] NORTHWESTERN UNIV, HOWARD BROWN MEM CLIN, CHICAGO, IL 60611 USA
[4] UNIV CALIF LOS ANGELES, LOS ANGELES, CA 90024 USA
[5] CETUS CORP, DEPT INFECT DIS, EMERYVILLE, CA 94608 USA
[6] CETUS CORP, DEPT HUMAN GENET, EMERYVILLE, CA 94608 USA
[7] UNIV PITTSBURGH, GRAD SCH PUBL HLTH, PITTSBURGH, PA 15260 USA