Ruano-Ravina Alberto, Kelsey Karl T, Fernández-Villar Alberto, Barros-Dios Juan M
Dept of Preventive Medicine and Public Health, University of Santiago de Compostela, Santiago de Compostela, Spain
CIBER de Epidemiología y Salud Pública, Madrid, Spain.
Eur Respir J. 2017 Nov 9;50(5). doi: 10.1183/13993003.01609-2017. Print 2017 Nov.