1. The Research Laboratory; Bonfils Blood Center; Denver CO USA
2. Department of Pediatrics; School of Medicine; University of Colorado Denver; Aurora CO USA
3. Department of Surgery; School of Medicine; University of Colorado Denver; Aurora CO USA
4. Reference Laboratories; Bonfils Blood Center; Denver CO USA
5. The Texas Region; Blood Systems, Inc.; Phoenix AZ USA
6. Haemonetics Corporation; Braintree MA USA