1. Johnson & Johnson Pharmaceutical Services Malvern, PAUSA
2. HealthCore, Inc. Wilmington, DEUSA
3. Department of Biostatistics Bioinformatics and Epidemiology, Medical University of South Carolina, Charleston, SCUSA
4. Centocor, Inc. Malvern, PAUSA
5. GlaxoSmithKline Collegeville, PAUSA
6. United BioSource Corp Bethesda, MDUSA