 1. Patients a weighing 8.0-20.0 kg with a hemoglobin of 7.0 gdL, b weighing 8.0-12.0 kg with a hemoglobin of 8.0 gdL unless blood prime used, and c weighing 12.1-20.0 kg with a hemoglobin of 7.5 gdL unless blood prime used. 