1. Hospital La Luz Madrid Spain
2. Australian Red Cross Blood Service and Faculty of Medicine and Health University of Sydney Sydney NSW Australia
3. Department of Anatomy, Histology, and Neuroscience School of Medicine Autonomous University of Madrid Madrid Spain
4. Department of Experimental Surgery IdiPAZ Hospital La Paz Madrid Spain
5. TeamHealth Research Institute TeamHealth Englewood NJ USA
6. Departments of Anesthesiology Critical Care and Hyperbaric Medicine Englewood Hospital and Medical Center Englewood NJ USA