1. The Department of Pathology, Microbiology and Immunology Vanderbilt University Medical Center Nashville Tennessee USA
2. Department of Laboratory Medicine Yale School of Medicine New Haven Connecticut USA
3. Department of Pathology University of Arizona College of Medicine Tucson Arizona USA
4. Ethics Consultation Service & Pulmonary Section, Medical Service, Veterans Affairs Loma Linda Healthcare System Loma Linda California USA
5. Division of Pulmonary and Critical Care Medicine, Department of Medicine Loma Linda University School of Medicine Loma Linda California USA
6. Department of Medicine, Hematology, Stem Cell Transplantation and Cellular Therapy Section, Division of Hematology/Oncology Vanderbilt University Medical Center and Veterans Affairs Medical Center Nashville Tennessee USA
7. American Red Cross, National Headquarters Washington DC USA