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1 Department of Respiratory Medicine, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; Autonomous University of Barcelona, Barcelona, Spain. Electronic address: atorrego@santpau.cat.
2 Department of Respiratory Medicine, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; Autonomous University of Barcelona, Barcelona, Spain.
3 Division of Allergy, Pulmonary and Critical Care, Vanderbilt University, Nashville, TN, United States.
4 Department of Medical Oncology and Pneumology, Eberhard Karls University, Tübingen, Germany.
1 Department of Respiratory Medicine, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; Autonomous University of Barcelona, Barcelona, Spain. Electronic address: atorrego@santpau.cat.
2 Department of Respiratory Medicine, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; Autonomous University of Barcelona, Barcelona, Spain.
3 Division of Allergy, Pulmonary and Critical Care, Vanderbilt University, Nashville, TN, United States.
4 Department of Medical Oncology and Pneumology, Eberhard Karls University, Tübingen, Germany.