1. The Barbara Davis Center (R.G., A.P., T.S., L.Y., D.M., R.G.G., J.B., P.S., A.V., G.S.E., J.H., P.G., A.W.) Denver, Colorado 80218;
2. Department of Pathology (R.G.), University of Colorado at Denver Denver, Colorado 80218;
3. Health Science Center, Aurora, Colorado 80010; Department of Pathology (R.G.), The Children’s Hospital, Denver, Colorado 80218
4. Donor Alliance (A.I., S.D.), Denver, Colorado 80246