1. Hemominas Foundation, Belo Horizonte, Minas Gerais, Brazil.
2. Pró-Sangue Foundation, São Paulo, Brazil.
3. Hemope Foundation, Pernambuco, Brazil.
4. Westat, USA, Bethesda, Maryland.
5. Blood Systems Research Institute, San Francisco, California.
6. Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
7. University of California, San Francisco, California.