Antonio Anzueto is Professor of Medicine at the University of Texas Health Science Center and Chief of the Pulmonary Section for the South Texas Veterans Health Care System, San Antonio, Texas, USA. In addition, he is a faculty member of the Pulmonary Disease and Critical Care Medicine Division, the Medical Director for the Pulmonary Function Laboratory at the University Hospital in San Antonio, and an adjunct scientist at the Southwest Foundation for Biomedical Research, San Antonio, Texas. His areas of interest include chronic obstructive pulmonary disease, chronic bronchitis, communityacquired pneumonia, sepsis, acute respiratory distress syndrome, and lung transplantation. He is a member of a number of medical committees, a reviewer for various scientific journals including the New England Journal of Medicine, and has published over 250 manuscripts in highly rated medical journals. He has extensive research experience as has been the principal investigator of numerous large multicenter clinical trials. He is member of several international committees such as the Global Initiative for Chronic Obstructive Lung Disease (GOLD); ATS/IDSA Community Acquired Pneumonia Guidelines Committee; International committee – consensus conference on ALI/ARDS. Dr. Anzueto received his Bachelor of Science degree from the Colegio Liceo Javier in Guatemala City and earned his medical degree at the Universidad de San Carlos de Guatemala. He completed his internship and residency in internal medicine at The University of Texas Health Science Center at San Antonio. Dr. Anzueto was granted successive fellowships in pulmonary disease medicine and critical care medicine at The University of Texas Health Science Center at San Antonio. In addition to his clinical duties at both University Hospital and The Audie Murphy VA Hospital, Dr. Anzueto is on the Pharmacy and Therapeutic Committee, Promotion and tenure Committee and the Institutional Review Board at the University of Texas Health Science Center at San Antonio. He has published more than 240 articles in peer-reviewed journals, including JAMA, New England Journal of Medicine, The Lancet, Lung, and Chest. He is the author of three books and numerous book chapters and abstracts. Dr. Anzueto is on the Editorial Board of Respiratory Research and is a reviewer for New England Journal of Medicine, Chest, American Journal of Respiratory and Critical Care Medicine, Southern Medical Journal, and Internet Journal of Emergency and Intensive Care Medicine. He is active in a number of professional organizations, including the American Thoracic Society and the American College of Chest Physicians. Dr. Anzueto is also a member of the Global Initiative for Chronic Obstructive Lung Disease (GOLD) executive and scientific committees. He is also a member of the American Thoracic Society (ATS) and European Respiratory Society task force that published the consensus statement in COPD diagnosis and Treatment. He has been member of the ATS Community acquired pneumonia guidelines committee since 2001 and is a co-author of the 2007 ATS/IDSA CAP guidelines.