1 Department of Respiratory Medicine, National Reference Center for Rare Pulmonary Diseases, Hospices Civils de Lyon, Lyon, France.
2 Claude Bernard Lyon 1 University, University of Lyon, INRA, UMR754, Lyon, France.
3 Department of Respiratory Medicine, National Reference Center for Rare Pulmonary Diseases, Hospices Civils de Lyon, Lyon, France; Claude Bernard Lyon 1 University, University of Lyon, INRA, UMR754, Lyon, France. Electronic address: vincent.cottin@chu-lyon.fr.