Association between severity of Idiopathic Pulmonary Fibrosis and air Pollution levels in Madrid - Mariscal Aguilar, Pablo; Gomez Carrera, Luis; Zamarron De Lucas, Ester; Carpio Segura, Carlos; Hidalgo Sanchez, Maria; Bonilla Hernan, Gema; Torres Sanchez, Maria Isabel; Fernandez-Velilla Pena, Maria; Diaz-Agero Alvarez, Prudencio; Villamanan Bueno, Elena; Regojo Zapata, Rita; Prados Sanchez, Concepcion; et al. (European Respiratory Journal, 2021)