Affiliation: | 1. Pulmonary Division, University Hospital Center, 15706 Santiago de Compostela, Spain;2. Clinical Laboratory, University Hospital Center, 15706 Santiago de Compostela, Spain;3. Internal Medicine Department, University Hospital Center, 15706 Santiago de Compostela, Spain;4. Clinical Research Unit, University Hospital Center, 15706 Santiago de Compostela, Spain;5. Pulmonary Division, Pontevedra Hospital Center, 36002 Pontevedra, Spain;6. Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Medical University of South Carolina, Charleston, SC 29425, USA |