1. Department of Histopathology; Manchester University NHS Foundation Trust; Manchester UK
2. CIBER Enfermedades Respiratorias (Ciberes); Hospital Vall d'Hebron; Universitat Autònoma de Barcelona; Barcelona Spain
3. Pneumology Service; Hospital Vall d'Hebron; Universitat Autònoma de Barcelona; Barcelona Spain
4. Pathology Department; Hospital Vall d'Hebron; Universitat Autònoma de Barcelona; Barcelona Spain
5. Department of Pathology; Karolinska University Hospital; Stockholm Sweden