Can air pollution be associated with COVID-19 mortality in Spain?
Comment to article: Mortality due to COVID-19 in Spain and its association with environmental factors and determinants of health / Mortalidad por COVID-19 en España y su asociación con factores ambientales y determinantes de la salud. Autores: Dante R. Culqui Lévano, Julio Díaz, Alejandro Blanco, José A. Lopez, Miguel A. Navas, Gerardo Sánchez‑Martínez, M. Yolanda…