1. Transfusion Medicine Division, Department of Pathology; Vanderbilt University School of Medicine; Nashville Tennessee
2. Department of Pathology; Johns Hopkins Medical Institutions; Baltimore Maryland
3. Blood Systems Research Institute; San Francisco California
4. Red Cross Blood Bank Foundation; Curaçao Netherlands Antilles
5. Frere Hospital; East London South Africa
6. American Association of Blood Banks; Washington DC
7. Department of Pathology; University of Miami Miller School of Medicine; Miami Florida