ELF: European Lung Foundation
http://www.europeanlung.org/es/
Enlaces
AEC (Asociación Española de Cirujanos)
http://www.aecirujanos.es/es/
American Association for the Study of Liver Diseases
http://www.aasld.org/Pages/Default.aspx
American College of Chest Physicians
http://www.chestnet.org/accp
American Red Cross Tissue Donation
https://www.asaio.com/
