[1] Hosp Univ Lucus Augusti, Serv Neumol, Lugo, Spain
[2] Inst Invest Sanitaria Santiago de Compostela IDIS, Serv Biodiscovery HULA USC C039, Santiago De Compostela, Spain
[3] Univ La Laguna, Inst Univ Enfermedades Trop & Salud Publ Canarias, Hosp Univ Nuestra Senora Candelaria, Serv Neumol & Cirugia Torac, Santa Cruz De Tenerife, CA USA
[4] Hosp Galdakao Usansolo, Serv Neumol, Bizkaia, Spain
[5] Hosp Galdakao Usansolo, Invest Serv Salud Enfermedades Cron REDISSEC, Bizkaia, Spain
[6] Hosp Univ Marques Valdecilla, Serv Neumol, Santander, Spain
[7] Univ Cantabria, Inst Invest Sanitaria Cantabria IDIVAL, Santander, Spain