ofessor of Pathology and Internal Medicine at the Mount Sinai School of Medicine in New York. His career in HLA started as a research scientist and extended to directing clinical HLA laboratories. He currently directs a full-spectrum blood banking/ transfusion service (blood donor center, blood bank lab, apheresis, stem cell processing lab, and outpatient transfusion services) and a clinical HLA lab. He teaches and trains clinical pathology residents and hematology/oncology fellows during their transfusion medicine rotations. Mary E Clay MS Department of Laboratory Medicine and Pathology University of Minnesota Medical Medical School Box MMC 198, Room D242 Mayo Building 420 Delaware Street S. E. Minneapolis MN 55455 USA Email: clayx002@umn.edu Mary Clay is the Director of the Transfusion Medicine Research and Development Program in the Department of Laboratory Medicine and Pathology at the University of Minnesota Medical School, Minneapolis, Minnesota. She has over 32 years of experience in transfusion medicine with 27 years focusing on conducting, managing and administering transfusion medicine R & D projects directed toward the production, clinical use and evaluation of standard and investigational hematopoietic stem cell and somatic cell products. She has special expertise in conducting clinical trials and the administrative management of cord blood banks. John Crosson MD Department of Laboratory Medicine and Pathology University of Minnesota Medical Medical School Box MMC 609 420 Delaware Street S. E. Minneapolis MN 55455 USA Email: cross008@umn.edu And Blood Bank Department of Pathology Hennepin County Medical Center Minneapolis, Minnesota Email: John.Crosson@co.hennepin.mn Dr Crosson is a Professor, Laboratory Medicine and Pathology, and the director of the residency training program in the Department of Laboratory Medicine and Pathology at the University of Minnesota Medical School. He directs the blood bank at the Hennepin County Medical Center, Minneapolis, Minnesota and is a pathologist with special expertise in kidney pathology. David Dennison MD Head, Department of Hematology Director of Bone Marrow Transplantation Sultan Qaboos University Hospital PO Box 35, Al Khod Muscat, Oman Email: davjden@yahoo.com Dr Dennison was graduated fron the Christian Medical College, Vellore, India, where he also trained in Internal Medicine. He completed hematology and oncology fellowship training at the University of Nebraska Medical Center, Omaha, Nebraska and was professor of medicine in the hematology department at the Christian Medical College Hospital, Vellore until 1998. He is currently head of the department of hematology and director of the bone marrow transplant program at the Sultan Qaboos University Hospital in Oman. His program has special interests in hereditary disorders prevalent in Oman such as beta thalassemia, immune system disorders and other rare hematologic disorders. Neelam Dhingra MD Ag Coordinator Blood Transfusion Safety Essential Health Technologies World Health Organization-Headquarters Avenue Appoa 20 CH-1211, Geneva, Switzerland Email: dhingran@who.int Ted Eastlund MD Co-director, Division of Transfusion Medicine Department o